{"product_id":"carbon-smart-indoor-sauna-kit-4x6x8-thermo-poplar","title":"Carbon Smart Indoor Sauna Kit – 4' x 6' x 8' | Thermo Poplar","description":"\u003cdiv class=\"iwl-sauna-page\"\u003e\n\n\u003c!-- ===== INTRO ===== --\u003e\n\u003cdiv class=\"iwl-section iwl-intro\"\u003e\n\u003cp\u003eThe Carbon Smart™ Indoor Sauna Kit gives you everything you need to build a complete, professionally finished sauna room in your home or commercial space. Sized at 4 ft × 6 ft × 8 ft and crafted from thermally modified Thermo Poplar, this kit ships with precision-cut interior components, an all-glass door, lighting, ventilation, and all the finishing details—so you can focus on the build, not the sourcing.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c!-- ===== WHY CUSTOMERS CHOOSE THIS ===== --\u003e\n\u003cdiv class=\"iwl-section iwl-why-choose\"\u003e\n\u003ch2\u003eWhy Customers Choose This Kit\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eComplete interior package—walls, ceiling, benches, door, lighting, and accessories included\u003c\/li\u003e\n\u003cli\u003eThermo Poplar wood is thermally modified without chemicals for lasting stability\u003c\/li\u003e\n\u003cli\u003ePrecision-cut components reduce installation time and on-site waste\u003c\/li\u003e\n\u003cli\u003eFlexible heater options from no heater to premium WiFi-enabled Harvia models\u003c\/li\u003e\n\u003cli\u003eOptional accessory packages let you customize the finish level\u003c\/li\u003e\n\u003cli\u003eSuitable for both residential and light commercial installations\u003c\/li\u003e\n\u003cli\u003eDetailed installation instructions included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003c!-- ===== PRODUCT HIGHLIGHTS ===== --\u003e\n\u003cdiv class=\"iwl-section iwl-highlights\"\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\n\u003cdiv class=\"iwl-highlight-item\"\u003e\n\u003ch3\u003eThermo Poplar Interior\u003c\/h3\u003e\n\u003cp\u003eAll wall boards, ceiling boards, bench boards, and trim are crafted from Thermo Poplar—a sustainably sourced wood thermally modified at approximately 374°F. The process improves dimensional stability and resistance to humidity without the use of chemicals.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"iwl-highlight-item\"\u003e\n\u003ch3\u003eAll-Glass Sauna Door\u003c\/h3\u003e\n\u003cp\u003eThe kit includes a full all-glass door with wood handles and trim. Frame dimensions are 27.2″ × 78.7″ (690 × 2000 mm); rough opening required is 28″ × 80″.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"iwl-highlight-item\"\u003e\n\u003ch3\u003eFoil Vapor Barrier\u003c\/h3\u003e\n\u003cp\u003eA foil vapor barrier is included to protect the wall structure from moisture migration—an essential component for long-term sauna performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"iwl-highlight-item\"\u003e\n\u003ch3\u003eVentilation System\u003c\/h3\u003e\n\u003cp\u003eUpper and lower vent grills are included to support proper air circulation throughout the sauna session.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"iwl-highlight-item\"\u003e\n\u003ch3\u003eMarine-Grade Vapor-Proof Lighting\u003c\/h3\u003e\n\u003cp\u003eA wall-mount, marine-grade, vapor-proof sauna light is included—rated for the high-heat, high-humidity sauna environment.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"iwl-highlight-item\"\u003e\n\u003ch3\u003eFlexible Heater Upgrades\u003c\/h3\u003e\n\u003cp\u003eChoose from six Harvia 6KW electric heater options at checkout, ranging from built-in manual controls to WiFi-enabled models with app-based scheduling. All heater options include sauna stones.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ===== WHAT'S INCLUDED ===== --\u003e\n\u003cdiv class=\"iwl-section iwl-included\"\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFoil vapor barrier\u003c\/li\u003e\n\u003cli\u003e1×4 tongue-and-groove wall and ceiling boards (Thermo Poplar)\u003c\/li\u003e\n\u003cli\u003eClear 1×4 bench boards with supports, 20″ deep (Thermo Poplar, custom-built to your chosen configuration)\u003c\/li\u003e\n\u003cli\u003eCorner moldings for walls, ceiling, and baseboards (Thermo Poplar)\u003c\/li\u003e\n\u003cli\u003eErgonomic backrests\u003c\/li\u003e\n\u003cli\u003eAll-glass sauna door with wood handles and trim (frame: 27.2″ × 78.7″; rough opening: 28″ × 80″)\u003c\/li\u003e\n\u003cli\u003eDuckboard flooring for walk area (Thermo Poplar)\u003c\/li\u003e\n\u003cli\u003eUpper and lower vent grills\u003c\/li\u003e\n\u003cli\u003eTraditional sauna bucket with liner and ladle\u003c\/li\u003e\n\u003cli\u003eSauna thermometer\u003c\/li\u003e\n\u003cli\u003eHeadrest\u003c\/li\u003e\n\u003cli\u003eMarine-grade, wall-mount, vapor-proof sauna light\u003c\/li\u003e\n\u003cli\u003eDetailed installation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Some product photos may show a glass wall for reference; your shipment includes an all-glass door. Backrests are shipped flat; angled pitch can be achieved on-site with spacers. Wall boards run horizontally by default; rooms wider than 8 ft will include an interior seam where boards meet.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c!-- ===== SPECIFICATIONS ===== --\u003e\n\u003cdiv class=\"iwl-section iwl-specs\"\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable class=\"iwl-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eInterior Dimensions\u003c\/th\u003e\n\u003ctd\u003e4 ft × 6 ft × 8 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWood Species\u003c\/th\u003e\n\u003ctd\u003eThermo Poplar (thermally modified)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModification Temperature\u003c\/th\u003e\n\u003ctd\u003eApproximately 374°F (chemical-free process)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall \/ Ceiling Profile\u003c\/th\u003e\n\u003ctd\u003e1×4 tongue-and-groove\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBench Depth\u003c\/th\u003e\n\u003ctd\u003e20 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDoor Frame Dimensions\u003c\/th\u003e\n\u003ctd\u003e27.2″ × 78.7″ (690 × 2000 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDoor Glass Dimensions\u003c\/th\u003e\n\u003ctd\u003e24.4″ × 77.3″ (620 × 1963 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDoor Frame Thickness\u003c\/th\u003e\n\u003ctd\u003e1.65″ × 3.6″ (42 × 92 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRough Opening Required\u003c\/th\u003e\n\u003ctd\u003e28″ × 80″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Ceiling Height\u003c\/th\u003e\n\u003ctd\u003e8 feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater Options\u003c\/th\u003e\n\u003ctd\u003eNo Heater, or Harvia 6KW (6 models available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAccessory Packages\u003c\/th\u003e\n\u003ctd\u003eNo Accessories, Bench Skirting, LED Under Bench Lighting, Luxury Package (Skirting + LED)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping Weight (approx.)\u003c\/th\u003e\n\u003ctd\u003e800 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003c!-- ===== HEATER COMPARISON ===== --\u003e\n\u003cdiv class=\"iwl-section iwl-heater-comparison\"\u003e\n\u003ch2\u003eSauna Heater Comparison\u003c\/h2\u003e\n\n\u003c!-- Desktop Table --\u003e\n\u003cdiv class=\"sauna-comparison-table-wrapper\"\u003e\n\u003ctable class=\"sauna-comparison-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eHarvia KIP60W 6KW\u003c\/th\u003e\n\u003cth\u003eHarvia KIP60B 6KW\u003c\/th\u003e\n\u003cth\u003eHarvia Cilindro PC60 6KW\u003c\/th\u003e\n\u003cth\u003eHarvia Cilindro PC60E 6KW\u003c\/th\u003e\n\u003cth\u003eHarvia Spirit 6KW\u003c\/th\u003e\n\u003cth\u003eHarvia Virta 6KW\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"sauna-feature-label\"\u003eProduct Image\u003c\/td\u003e\n\u003ctd class=\"sauna-heater-image-cell\"\u003e\u003cimg alt=\"Harvia KIP60W Sauna Heater\" class=\"sauna-heater-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0582\/6386\/3453\/files\/Harvia_KIP60W.webp?v=1770304272\"\u003e\u003c\/td\u003e\n\u003ctd class=\"sauna-heater-image-cell\"\u003e\u003cimg alt=\"Harvia KIP60B Sauna Heater\" class=\"sauna-heater-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0582\/6386\/3453\/files\/Harvia_KIP60B.webp?v=1770304272\"\u003e\u003c\/td\u003e\n\u003ctd class=\"sauna-heater-image-cell\"\u003e\u003cimg alt=\"Harvia Cilindro PC60 Sauna Heater\" class=\"sauna-heater-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0582\/6386\/3453\/files\/Harvia_Cilindro_PC60.webp?v=1770304272\"\u003e\u003c\/td\u003e\n\u003ctd class=\"sauna-heater-image-cell\"\u003e\u003cimg alt=\"Harvia Cilindro PC60E Sauna Heater\" class=\"sauna-heater-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0582\/6386\/3453\/files\/Harvia_Cilindro_PC60E.webp?v=1770304272\"\u003e\u003c\/td\u003e\n\u003ctd class=\"sauna-heater-image-cell\"\u003e\u003cimg alt=\"Harvia Spirit Sauna Heater\" class=\"sauna-heater-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0582\/6386\/3453\/files\/Harvia_Spirit_SP60.webp?v=1770304272\"\u003e\u003c\/td\u003e\n\u003ctd class=\"sauna-heater-image-cell\"\u003e\u003cimg alt=\"Harvia Virta Sauna Heater\" class=\"sauna-heater-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0582\/6386\/3453\/files\/Harvia_Virta_6KW.webp?v=1770304272\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"sauna-feature-label\"\u003ePower Output\u003c\/td\u003e\n\u003ctd\u003e6 KW\u003c\/td\u003e\n\u003ctd\u003e6 KW\u003c\/td\u003e\n\u003ctd\u003e6 KW\u003c\/td\u003e\n\u003ctd\u003e6 KW\u003c\/td\u003e\n\u003ctd\u003e6 KW\u003c\/td\u003e\n\u003ctd\u003e6 KW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"sauna-feature-label\"\u003eControl Type\u003c\/td\u003e\n\u003ctd\u003eWiFi Control\u003c\/td\u003e\n\u003ctd\u003eBuilt-in Control\u003c\/td\u003e\n\u003ctd\u003eBuilt-in Control\u003c\/td\u003e\n\u003ctd\u003eWiFi Control\u003c\/td\u003e\n\u003ctd\u003eWiFi Control\u003c\/td\u003e\n\u003ctd\u003eWiFi Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"sauna-feature-label\"\u003eWiFi Connectivity\u003c\/td\u003e\n\u003ctd class=\"sauna-check-yes\"\u003eYes\u003c\/td\u003e\n\u003ctd class=\"sauna-check-no\"\u003eNo\u003c\/td\u003e\n\u003ctd class=\"sauna-check-no\"\u003eNo\u003c\/td\u003e\n\u003ctd class=\"sauna-check-yes\"\u003eYes\u003c\/td\u003e\n\u003ctd class=\"sauna-check-yes\"\u003eYes\u003c\/td\u003e\n\u003ctd class=\"sauna-check-yes\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"sauna-feature-label\"\u003eHeater Stones Included\u003c\/td\u003e\n\u003ctd class=\"sauna-check-yes\"\u003eYes\u003c\/td\u003e\n\u003ctd class=\"sauna-check-yes\"\u003eYes\u003c\/td\u003e\n\u003ctd class=\"sauna-check-yes\"\u003eYes\u003c\/td\u003e\n\u003ctd class=\"sauna-check-yes\"\u003eYes\u003c\/td\u003e\n\u003ctd class=\"sauna-check-yes\"\u003eYes\u003c\/td\u003e\n\u003ctd class=\"sauna-check-yes\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"sauna-feature-label\"\u003eRailing Included\u003c\/td\u003e\n\u003ctd class=\"sauna-check-no\"\u003eNo\u003c\/td\u003e\n\u003ctd class=\"sauna-check-no\"\u003eNo\u003c\/td\u003e\n\u003ctd class=\"sauna-check-no\"\u003eNo\u003c\/td\u003e\n\u003ctd class=\"sauna-check-no\"\u003eNo\u003c\/td\u003e\n\u003ctd class=\"sauna-check-no\"\u003eNo\u003c\/td\u003e\n\u003ctd class=\"sauna-check-yes\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"sauna-feature-label\"\u003eModel Series\u003c\/td\u003e\n\u003ctd\u003eKIP Series\u003c\/td\u003e\n\u003ctd\u003eKIP Series\u003c\/td\u003e\n\u003ctd\u003eCilindro Series\u003c\/td\u003e\n\u003ctd\u003eCilindro Series\u003c\/td\u003e\n\u003ctd\u003eSpirit Series\u003c\/td\u003e\n\u003ctd\u003eVirta Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"sauna-feature-label\"\u003eRemote Control\u003c\/td\u003e\n\u003ctd\u003eApp-based via WiFi\u003c\/td\u003e\n\u003ctd\u003eManual only\u003c\/td\u003e\n\u003ctd\u003eManual only\u003c\/td\u003e\n\u003ctd\u003eApp-based via WiFi\u003c\/td\u003e\n\u003ctd\u003eApp-based via WiFi\u003c\/td\u003e\n\u003ctd\u003eApp-based via WiFi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003c!-- Mobile Cards --\u003e\n\u003cdiv class=\"sauna-mobile-cards\"\u003e\n\u003cdiv class=\"sauna-mobile-card\"\u003e\n\u003ch3 class=\"sauna-mobile-card-title\"\u003eHarvia KIP60W 6KW WiFi\u003c\/h3\u003e\n\u003cdiv class=\"sauna-mobile-card-image\"\u003e\u003cimg alt=\"Harvia KIP60W Sauna Heater\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0582\/6386\/3453\/files\/Harvia_KIP60W.webp?v=1770304272\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003ePower\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value\"\u003e6 KW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eControl\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value\"\u003eWiFi \/ App\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eStones\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value sauna-check-yes\"\u003eIncluded\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eRailing\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value sauna-check-no\"\u003eNot included\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-card\"\u003e\n\u003ch3 class=\"sauna-mobile-card-title\"\u003eHarvia KIP60B 6KW Built-in\u003c\/h3\u003e\n\u003cdiv class=\"sauna-mobile-card-image\"\u003e\u003cimg alt=\"Harvia KIP60B Sauna Heater\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0582\/6386\/3453\/files\/Harvia_KIP60B.webp?v=1770304272\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003ePower\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value\"\u003e6 KW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eControl\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value\"\u003eBuilt-in \/ Manual\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eStones\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value sauna-check-yes\"\u003eIncluded\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eRailing\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value sauna-check-no\"\u003eNot included\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-card\"\u003e\n\u003ch3 class=\"sauna-mobile-card-title\"\u003eHarvia Cilindro PC60 6KW Built-in\u003c\/h3\u003e\n\u003cdiv class=\"sauna-mobile-card-image\"\u003e\u003cimg alt=\"Harvia Cilindro PC60 Sauna Heater\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0582\/6386\/3453\/files\/Harvia_Cilindro_PC60.webp?v=1770304272\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003ePower\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value\"\u003e6 KW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eControl\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value\"\u003eBuilt-in \/ Manual\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eStones\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value sauna-check-yes\"\u003eIncluded\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eRailing\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value sauna-check-no\"\u003eNot included\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-card\"\u003e\n\u003ch3 class=\"sauna-mobile-card-title\"\u003eHarvia Cilindro PC60E 6KW WiFi\u003c\/h3\u003e\n\u003cdiv class=\"sauna-mobile-card-image\"\u003e\u003cimg alt=\"Harvia Cilindro PC60E Sauna Heater\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0582\/6386\/3453\/files\/Harvia_Cilindro_PC60E.webp?v=1770304272\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003ePower\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value\"\u003e6 KW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eControl\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value\"\u003eWiFi \/ App\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eStones\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value sauna-check-yes\"\u003eIncluded\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eRailing\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value sauna-check-no\"\u003eNot included\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-card\"\u003e\n\u003ch3 class=\"sauna-mobile-card-title\"\u003eHarvia Spirit 6KW WiFi\u003c\/h3\u003e\n\u003cdiv class=\"sauna-mobile-card-image\"\u003e\u003cimg alt=\"Harvia Spirit Sauna Heater\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0582\/6386\/3453\/files\/Harvia_Spirit_SP60.webp?v=1770304272\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003ePower\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value\"\u003e6 KW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eControl\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value\"\u003eWiFi \/ App\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eStones\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value sauna-check-yes\"\u003eIncluded\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eRailing\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value sauna-check-no\"\u003eNot included\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-card\"\u003e\n\u003ch3 class=\"sauna-mobile-card-title\"\u003eHarvia Virta 6KW WiFi + Railing\u003c\/h3\u003e\n\u003cdiv class=\"sauna-mobile-card-image\"\u003e\u003cimg alt=\"Harvia Virta Sauna Heater\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0582\/6386\/3453\/files\/Harvia_Virta_6KW.webp?v=1770304272\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003ePower\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value\"\u003e6 KW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eControl\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value\"\u003eWiFi \/ App\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eStones\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value sauna-check-yes\"\u003eIncluded\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-row\"\u003e\n\u003cdiv class=\"sauna-mobile-feature-label\"\u003eRailing\u003c\/div\u003e\n\u003cdiv class=\"sauna-mobile-feature-value sauna-check-yes\"\u003eIncluded\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"iwl-heater-key-differences\"\u003e\n\u003ch3\u003eKey Differences at a Glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAll heater options deliver 6 KW of heating output\u003c\/li\u003e\n\u003cli\u003eKIP60B and Cilindro PC60 use a built-in manual control panel—no app or remote required\u003c\/li\u003e\n\u003cli\u003eKIP60W, Cilindro PC60E, Spirit, and Virta are WiFi-enabled for smartphone scheduling and control\u003c\/li\u003e\n\u003cli\u003eKIP Series: compact wall-mount profile; Cilindro Series: cylindrical with high stone capacity; Spirit and Virta: modern aesthetic with WiFi\u003c\/li\u003e\n\u003cli\u003eHarvia Virta is the only model that includes a protective railing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ===== IDEAL FOR ===== --\u003e\n\u003cdiv class=\"iwl-section iwl-ideal-for\"\u003e\n\u003ch2\u003eIdeal For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHomeowners building a dedicated sauna room in a basement, garage, or spare room\u003c\/li\u003e\n\u003cli\u003eDIY builders and professional contractors looking for precision-cut, ready-to-install components\u003c\/li\u003e\n\u003cli\u003eResidential wellness spaces, home gyms, and personal retreats\u003c\/li\u003e\n\u003cli\u003eLight commercial applications such as spas, fitness studios, and boutique hotels\u003c\/li\u003e\n\u003cli\u003eBuyers who want to select their own heater or add one later\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003c!-- ===== IMPORTANT INFORMATION ===== --\u003e\n\u003cdiv class=\"iwl-section iwl-important-info\"\u003e\n\u003ch2\u003eImportant Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFraming, insulation, electrical wiring, and exterior wall covering are not included\u003c\/strong\u003e and must be supplied by the installer.\u003c\/li\u003e\n\u003cli\u003eRecommended ceiling height is 8 feet per manufacturer safety and clearance guidelines. For custom ceiling heights, contact our support team before ordering.\u003c\/li\u003e\n\u003cli\u003eElectric sauna heaters require a dedicated electrical circuit. Consult a licensed electrician to confirm your installation meets local electrical code requirements.\u003c\/li\u003e\n\u003cli\u003eAll heater installations should comply with the manufacturer's minimum clearance specifications and applicable local building codes.\u003c\/li\u003e\n\u003cli\u003eThis kit is designed for indoor use only. Do not install in unheated or uninsulated spaces without consulting a qualified contractor.\u003c\/li\u003e\n\u003cli\u003eSauna use is not recommended for individuals with certain medical conditions. Consult a qualified healthcare provider before use if you have any health concerns.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003c!-- ===== FAQ ===== --\u003e\n\u003cdiv class=\"iwl-section iwl-faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails class=\"iwl-faq-item\"\u003e\n\u003csummary class=\"iwl-faq-question\"\u003eWhat does this kit include?\u003c\/summary\u003e\n\u003cdiv class=\"iwl-faq-answer\"\u003e\n\u003cp\u003eThe kit includes all interior sauna components: tongue-and-groove wall and ceiling boards, bench boards and supports, corner moldings, backrests, duckboard flooring, an all-glass door with wood handles and trim, upper and lower vent grills, a foil vapor barrier, a sauna bucket with liner and ladle, a thermometer, a headrest, and a marine-grade vapor-proof light. Detailed installation instructions are also included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"iwl-faq-item\"\u003e\n\u003csummary class=\"iwl-faq-question\"\u003eWhat do I need to supply that is not included?\u003c\/summary\u003e\n\u003cdiv class=\"iwl-faq-answer\"\u003e\n\u003cp\u003eYou will need to supply the structural framing, insulation, electrical wiring, and exterior wall covering. If you select a heater option, a licensed electrician will need to install a dedicated electrical circuit sized to the heater's specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"iwl-faq-item\"\u003e\n\u003csummary class=\"iwl-faq-question\"\u003eCan I order this kit without a heater and add one later?\u003c\/summary\u003e\n\u003cdiv class=\"iwl-faq-answer\"\u003e\n\u003cp\u003eYes. Select \"No Heater\" at checkout to receive the full interior kit without a heater. You can source and install a compatible heater separately at any time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"iwl-faq-item\"\u003e\n\u003csummary class=\"iwl-faq-question\"\u003eWhat is Thermo Poplar and why is it used?\u003c\/summary\u003e\n\u003cdiv class=\"iwl-faq-answer\"\u003e\n\u003cp\u003eThermo Poplar is a sustainably sourced wood that has been thermally modified at approximately 374°F. The heat treatment improves the wood's dimensional stability and resistance to humidity and temperature fluctuations—without the use of chemicals. It is well suited for the high-heat, high-humidity environment of a sauna interior.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"iwl-faq-item\"\u003e\n\u003csummary class=\"iwl-faq-question\"\u003eWhat rough opening is required for the door?\u003c\/summary\u003e\n\u003cdiv class=\"iwl-faq-answer\"\u003e\n\u003cp\u003eThe all-glass door requires a rough opening of 28″ × 80″. The door frame dimensions are 27.2″ × 78.7″ (690 × 2000 mm).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"iwl-faq-item\"\u003e\n\u003csummary class=\"iwl-faq-question\"\u003eCan I request a custom ceiling height?\u003c\/summary\u003e\n\u003cdiv class=\"iwl-faq-answer\"\u003e\n\u003cp\u003eThe standard kit is designed for an 8-foot ceiling height per manufacturer safety and clearance guidelines. If your space requires a different ceiling height, please contact our support team before placing your order.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"iwl-faq-item\"\u003e\n\u003csummary class=\"iwl-faq-question\"\u003eWhat is the difference between the WiFi and built-in control heater options?\u003c\/summary\u003e\n\u003cdiv class=\"iwl-faq-answer\"\u003e\n\u003cp\u003eBuilt-in control models (KIP60B and Cilindro PC60) are operated manually using a control panel on the heater itself. WiFi-enabled models (KIP60W, Cilindro PC60E, Spirit, and Virta) connect to your home network and can be controlled and scheduled via a smartphone app.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"iwl-faq-item\"\u003e\n\u003csummary class=\"iwl-faq-question\"\u003eIs this kit suitable for commercial use?\u003c\/summary\u003e\n\u003cdiv class=\"iwl-faq-answer\"\u003e\n\u003cp\u003eYes. The Carbon Smart™ kit is suitable for light commercial applications including spas, fitness studios, and boutique hotels. For high-traffic commercial environments, contact our team to discuss the appropriate configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003c!-- ===== CLOSING ===== --\u003e\n\u003cdiv class=\"iwl-section iwl-closing\"\u003e\n\u003cp\u003eThe Carbon Smart™ 4 × 6 × 8 Indoor Sauna Kit is a complete, well-specified package built for straightforward installation and long-term performance. Select your wood type, accessory package, and heater option above to configure your kit and place your order.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c!-- ===== HEALTH DISCLAIMER ===== --\u003e\n\u003cp style=\"text-align: center; font-size: 0.8em; color: #888; margin-top: 2rem;\"\u003eSauna use may not be appropriate for everyone. Consult a qualified healthcare provider before use if you have any medical conditions or health concerns. This product is not intended to diagnose, treat, cure, or prevent any disease or medical condition.\u003c\/p\u003e\n\n\u003c!-- ===== FAQ SCHEMA ===== --\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What does this kit include?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The kit includes all interior sauna components: tongue-and-groove wall and ceiling boards, bench boards and supports, corner moldings, backrests, duckboard flooring, an all-glass door with wood handles and trim, upper and lower vent grills, a foil vapor barrier, a sauna bucket with liner and ladle, a thermometer, a headrest, and a marine-grade vapor-proof light. Detailed installation instructions are also included.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What do I need to supply that is not included?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"You will need to supply the structural framing, insulation, electrical wiring, and exterior wall covering. If you select a heater option, a licensed electrician will need to install a dedicated electrical circuit sized to the heater's specifications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I order this kit without a heater and add one later?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Select 'No Heater' at checkout to receive the full interior kit without a heater. You can source and install a compatible heater separately at any time.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is Thermo Poplar and why is it used?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Thermo Poplar is a sustainably sourced wood thermally modified at approximately 374°F. The heat treatment improves dimensional stability and resistance to humidity without chemicals—well suited for the high-heat, high-humidity sauna environment.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What rough opening is required for the door?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The all-glass door requires a rough opening of 28 inches by 80 inches. The door frame dimensions are 27.2 inches by 78.7 inches (690 x 2000 mm).\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I request a custom ceiling height?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The standard kit is designed for an 8-foot ceiling height. If your space requires a different ceiling height, please contact our support team before placing your order.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between the WiFi and built-in control heater options?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Built-in control models (KIP60B and Cilindro PC60) are operated manually using a control panel on the heater. WiFi-enabled models (KIP60W, Cilindro PC60E, Spirit, and Virta) connect to your home network and can be controlled and scheduled via a smartphone app.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this kit suitable for commercial use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The Carbon Smart kit is suitable for light commercial applications including spas, fitness studios, and boutique hotels. For high-traffic commercial environments, contact our team to discuss the appropriate configuration.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003c\/div\u003e","brand":"Finnish Sauna Builders","offers":[{"title":"Thermo Poplar \/ No Accessories \/ No Heater","offer_id":50263950721263,"sku":"sku-48203086168305","price":6900.5,"currency_code":"USD","in_stock":true},{"title":"Thermo Poplar \/ No Accessories \/ Harvia KIP60W 6KW WiFi with Heater Stones","offer_id":50263950754031,"sku":"sku-48203086201073","price":9216.5,"currency_code":"USD","in_stock":true},{"title":"Thermo Poplar \/ No Accessories \/ Harvia KIP60B 6KW with Built-in Control and Heater Stones","offer_id":50263950786799,"sku":"sku-48203086233841","price":8130.0,"currency_code":"USD","in_stock":true},{"title":"Thermo Poplar \/ No Accessories \/ Harvia Cilindro PC60 6KW with Built-in Control and Heater 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Stones","offer_id":50263950983407,"sku":"thermo-3-4-20","price":9722.3,"currency_code":"USD","in_stock":true},{"title":"Thermo Poplar \/ Bench Skirting \/ Harvia KIP60B 6KW with Built-in Control and Heater Stones","offer_id":50263951016175,"sku":"thermo-3-4-23","price":8635.8,"currency_code":"USD","in_stock":true},{"title":"Thermo Poplar \/ Bench Skirting \/ Harvia Cilindro PC60 6KW with Built-in Control and Heater Stones","offer_id":50263951048943,"sku":"thermo-3-4-26","price":9139.8,"currency_code":"USD","in_stock":true},{"title":"Thermo Poplar \/ Bench Skirting \/ Harvia Cilindro PC60E 6KW WiFi with Heater Stones","offer_id":50263951081711,"sku":"sku-48203086528753","price":10395.8,"currency_code":"USD","in_stock":true},{"title":"Thermo Poplar \/ Bench Skirting \/ Harvia Spirit 6KW WiFi with Heater Stones","offer_id":50263951114479,"sku":"sku-48203086561521","price":10711.3,"currency_code":"USD","in_stock":true},{"title":"Thermo Poplar \/ Bench Skirting \/ Harvia Virta 6KW WiFi with 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