{"product_id":"carbon-smart-indoor-sauna-kit-7x9x8-thermo-poplar","title":"Carbon Smart Indoor Sauna Kit | 7' x 9' x 8' | Thermo Poplar","description":"\u003csection class=\"product-intro\"\u003e\n\u003cp\u003eThe Carbon Smart™ Indoor Sauna Kit (7’ x 9’ x 8’) is a complete interior sauna package designed for homeowners and contractors who want a high-quality, custom-fit sauna without sourcing components separately. Built with thermally modified Thermo Poplar throughout, this kit arrives with all interior components precisely cut to your room dimensions. You supply the framing, insulation, electrical wiring, and exterior wall covering — we supply everything inside. Choose your accessory package and optional Harvia WiFi heater at checkout to configure the kit that fits your space and budget.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-why-choose\"\u003e\n\u003ch2\u003eWhy Customers Choose the Carbon Smart™ Sauna Kit\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eComplete interior kit — all components are pre-cut to your room dimensions\u003c\/li\u003e\n\u003cli\u003eThermo Poplar wood throughout: dimensionally stable, humidity-resistant, chemical-free treatment\u003c\/li\u003e\n\u003cli\u003eAll-glass sauna door with wood handles and trim included\u003c\/li\u003e\n\u003cli\u003eChoice of accessory packages: bench skirting, LED under-bench lighting, or both\u003c\/li\u003e\n\u003cli\u003eOptional Harvia WiFi heater bundles available at checkout — no separate sourcing required\u003c\/li\u003e\n\u003cli\u003eSuitable for DIY installation or professional contractor builds\u003c\/li\u003e\n\u003cli\u003eDesigned and supplied by Finnish Sauna Builders, specialists in custom indoor sauna systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-highlights\"\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3 class=\"highlight-icon highlight-icon--wood\"\u003eThermo Poplar Interior Wood\u003c\/h3\u003e\n\u003cp\u003eThermo Poplar is a sustainably sourced wood thermally modified at approximately 374°F. The process — chemical-free — enhances dimensional stability and resistance to humidity and temperature fluctuations, producing a warm, rich tone well-suited to sauna environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3 class=\"highlight-icon highlight-icon--kit\"\u003ePre-Cut Interior Components\u003c\/h3\u003e\n\u003cp\u003eEvery board, molding, and panel in this kit is cut to fit your 7’ x 9’ x 8’ room. You frame and insulate the space; the kit handles the interior finish from wall boards to ceiling to benches.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3 class=\"highlight-icon highlight-icon--door\"\u003eAll-Glass Sauna Door\u003c\/h3\u003e\n\u003cp\u003eThe included all-glass door features wood handles and trim, with a frame measuring 27.2” x 78.7” (690 x 2000 mm) and a required rough opening of 28” x 80”. It provides a clean, modern look while maintaining proper sauna heat retention.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3 class=\"highlight-icon highlight-icon--bench\"\u003eConfigurable Bench Layout\u003c\/h3\u003e\n\u003cp\u003eBench configurations are available in multiple layouts shown in the product images. Each uses 20”-deep clear Thermo Poplar bench boards with supports, custom-built to your chosen configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3 class=\"highlight-icon highlight-icon--accessories\"\u003eOptional Accessory Packages\u003c\/h3\u003e\n\u003cp\u003eUpgrade your kit with bench skirting for a finished look, LED under-bench lighting for ambiance, or the Luxury Package that includes both. All accessories are matched to the Thermo Poplar finish.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3 class=\"highlight-icon highlight-icon--heater\"\u003eOptional Harvia WiFi Heater Bundles\u003c\/h3\u003e\n\u003cp\u003eSelect a Harvia heater at checkout — Cilindro 11KW, Club 10KW, Virta 10.5KW, or Virta Combi 10.5KW — each with WiFi control and heater stones included. The Virta and Virta Combi models also include a safety railing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-whats-included\"\u003e\n\u003ch2\u003eWhat’s Included in the Kit\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFoil vapor barrier for moisture protection\u003c\/li\u003e\n\u003cli\u003eErgonomic backrests\u003c\/li\u003e\n\u003cli\u003e1x4 tongue-and-groove wall and ceiling boards in Thermo Poplar\u003c\/li\u003e\n\u003cli\u003eClear 1x4 bench boards with supports (20” deep) in Thermo Poplar — custom-built to your chosen configuration\u003c\/li\u003e\n\u003cli\u003eCorner moldings for walls, ceiling, and baseboards in Thermo Poplar\u003c\/li\u003e\n\u003cli\u003eAll-glass sauna door with wood handles and trim (frame: 27.2” x 78.7”; glass: 24.4” x 77.3”; rough opening: 28” x 80”)\u003c\/li\u003e\n\u003cli\u003eDuckboard flooring for walk area in Thermo Poplar\u003c\/li\u003e\n\u003cli\u003eUpper and lower vent grills for air circulation\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\u003cem\u003eFraming, insulation, electrical wiring, and exterior wall covering are not included and must be supplied on-site.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-specifications\"\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom Dimensions\u003c\/th\u003e\n\u003ctd\u003e7’ x 9’ x 8’ (W x D x H)\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\u003eInterior Wood\u003c\/th\u003e\n\u003ctd\u003eThermo Poplar (thermally modified, chemical-free)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall \u0026amp; Ceiling Boards\u003c\/th\u003e\n\u003ctd\u003e1x4 tongue-and-groove, horizontal run (seam added if width exceeds 8 ft)\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 Size\u003c\/th\u003e\n\u003ctd\u003e27.2” x 78.7” (690 x 2000 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDoor Glass Size\u003c\/th\u003e\n\u003ctd\u003e24.4” x 77.3” (620 x 1963 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDoor Frame Thickness\u003c\/th\u003e\n\u003ctd\u003e1.65” x 3.6” (42 x 92 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRough Opening Required\u003c\/th\u003e\n\u003ctd\u003e28” x 80”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWood Type Option\u003c\/th\u003e\n\u003ctd\u003eThermo Poplar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAccessory Options\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\u003eHeater Options\u003c\/th\u003e\n\u003ctd\u003eNo Heater \/ Harvia Cilindro 11KW WiFi \/ Harvia Club 10KW WiFi \/ Harvia Virta 10.5KW WiFi \/ Harvia Virta Combi 10.5KW WiFi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping Weight\u003c\/th\u003e\n\u003ctd\u003e800 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eCustom Indoor Sauna Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVendor\u003c\/th\u003e\n\u003ctd\u003eFinnish Sauna Builders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-heater-comparison\"\u003e\n\u003ch2\u003eHeater Option Comparison\u003c\/h2\u003e\n\u003cp\u003eAll heater options below include WiFi connectivity, app-based remote control, and heater stones. Select the model that best matches your sauna room size and feature preferences.\u003c\/p\u003e\n\u003ctable class=\"specs-table sauna-comparison-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eHarvia Cilindro 11KW\u003c\/th\u003e\n\u003cth\u003eHarvia Club 10KW\u003c\/th\u003e\n\u003cth\u003eHarvia Virta 10.5KW\u003c\/th\u003e\n\u003cth\u003eHarvia Virta Combi 10.5KW\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"sauna-feature-label\"\u003ePower Output\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003ctd\u003e10 kW\u003c\/td\u003e\n\u003ctd\u003e10.5 kW\u003c\/td\u003e\n\u003ctd\u003e10.5 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"sauna-feature-label\"\u003eWiFi Control\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\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\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"sauna-feature-label\"\u003eSafety Railing Included\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"sauna-feature-label\"\u003eCombi Steam Function\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"sauna-feature-label\"\u003eDesign Series\u003c\/td\u003e\n\u003ctd\u003eCilindro (cylindrical)\u003c\/td\u003e\n\u003ctd\u003eClub (floor-standing)\u003c\/td\u003e\n\u003ctd\u003eVirta (wall-mount)\u003c\/td\u003e\n\u003ctd\u003eVirta Combi (wall-mount)\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\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\n\u003cdiv class=\"sauna-key-differences\"\u003e\n\u003ch3\u003eKey Differences at a Glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHighest output:\u003c\/strong\u003e Harvia Cilindro at 11 kW — best suited for the largest rooms in this size range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommercial-grade floor-standing design:\u003c\/strong\u003e Harvia Club at 10 kW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWall-mounted with safety railing:\u003c\/strong\u003e Harvia Virta at 10.5 kW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombined dry sauna and steam function:\u003c\/strong\u003e Harvia Virta Combi at 10.5 kW — the only model with an integrated steam generator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll four models\u003c\/strong\u003e include WiFi app control, scheduling, and heater stones\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-ideal-for\"\u003e\n\u003ch2\u003eIdeal For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHomeowners building a dedicated indoor sauna room in a basement, spare room, or addition\u003c\/li\u003e\n\u003cli\u003eDIY builders who want pre-cut, matched components without custom fabrication\u003c\/li\u003e\n\u003cli\u003eContractors outfitting residential or light commercial sauna spaces\u003c\/li\u003e\n\u003cli\u003eBuyers who want a complete interior kit with the option to add a WiFi-controlled heater in one order\u003c\/li\u003e\n\u003cli\u003eThose who prefer thermally modified, sustainably sourced wood for their sauna interior\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-important-info\"\u003e\n\u003ch2\u003eImportant Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFraming, insulation, electrical, and exterior finish not included.\u003c\/strong\u003e This kit supplies all interior sauna components. The structural shell, insulation, wiring, and exterior wall covering must be provided on-site.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended ceiling height is 8 feet.\u003c\/strong\u003e For custom ceiling heights, contact the Finnish Sauna Builders support team before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWall boards run horizontally by default.\u003c\/strong\u003e If room width exceeds 8 feet, an interior seam will be added where two boards meet to span the width.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoor ships as all-glass.\u003c\/strong\u003e Some product photos may show a glass wall for reference; the included door is the all-glass model with wood handles and trim.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackrests ship flat.\u003c\/strong\u003e If an angled backrest is preferred, additional spacers can be created on-site to achieve the desired pitch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeater installation requires a licensed electrician.\u003c\/strong\u003e If a heater option is selected, all electrical work must be performed by a qualified professional in accordance with local codes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeater sizing:\u003c\/strong\u003e All optional heater models are rated for rooms larger than this kit’s 7’ x 9’ x 8’ footprint. Confirm compatibility with your specific room construction before selecting a heater.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Finnish Sauna Builders\u003c\/strong\u003e before ordering if you have questions about bench configuration, ceiling height, or heater selection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary class=\"faq-question\"\u003eWhat does the Carbon Smart™ sauna kit include?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eThe kit includes all interior sauna components: foil vapor barrier, tongue-and-groove wall and ceiling boards, bench boards and supports, corner moldings, duckboard flooring, vent grills, an all-glass sauna door with wood handles and trim, ergonomic backrests, a headrest, a sauna bucket with liner and ladle, a thermometer, a vapor-proof sauna light, and installation instructions. Framing, insulation, electrical wiring, and exterior wall covering are not included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary class=\"faq-question\"\u003eWhat do I need to supply that is not in the kit?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eYou are responsible for the structural framing, insulation, electrical wiring, and exterior wall covering. If you select a heater option, a licensed electrician must install the heater and dedicated electrical circuit in accordance with local codes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary class=\"faq-question\"\u003eWhat is Thermo Poplar and why is it used?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eThermo Poplar is a sustainably sourced wood that has been thermally modified at approximately 374°F using a chemical-free process. This treatment improves the wood’s dimensional stability and resistance to humidity and temperature changes — properties that make it well-suited for the high-heat, high-humidity environment of a sauna interior. It also produces a warm, rich tone.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary class=\"faq-question\"\u003eCan I choose a different bench configuration?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eYes. Multiple bench configurations are available and shown in the product images. Each configuration uses 20”-deep clear Thermo Poplar bench boards custom-built to your chosen layout. Select your preferred configuration at checkout or contact Finnish Sauna Builders for guidance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary class=\"faq-question\"\u003eWhat are the accessory package options?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eThere are four accessory options: No Accessories (kit only), Bench Skirting (adds a finished panel below the benches), LED Under-Bench Lighting (adds ambient lighting beneath the benches), and the Luxury Package which includes both bench skirting and LED under-bench lighting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary class=\"faq-question\"\u003eWhich heater should I choose for this sauna size?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eAll four heater options — Harvia Cilindro 11KW, Club 10KW, Virta 10.5KW, and Virta Combi 10.5KW — are rated for rooms larger than this kit’s 7’ x 9’ x 8’ footprint. The right choice depends on your room’s insulation, ceiling construction, and personal preferences. The Virta Combi is the only model with an integrated steam function. Contact Finnish Sauna Builders if you need help selecting the right heater.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary class=\"faq-question\"\u003eIs this kit suitable for DIY installation?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eYes. The Carbon Smart™ kit is designed for both DIY enthusiasts and professional contractors. Detailed installation instructions are included. Electrical work for any heater must be performed by a licensed electrician regardless of who installs the sauna interior.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary class=\"faq-question\"\u003eWhat is the required rough opening for the sauna door?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eThe included all-glass sauna door requires a rough opening of 28” x 80”. The door frame measures 27.2” x 78.7” (690 x 2000 mm) and the glass panel measures 24.4” x 77.3” (620 x 1963 mm).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary class=\"faq-question\"\u003eCan I order a custom ceiling height?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eThe standard recommended ceiling height is 8 feet per manufacturer safety and clearance guidelines. For custom ceiling heights, contact the Finnish Sauna Builders support team before placing your order.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/section\u003e\n\n\u003csection class=\"product-closing\"\u003e\n\u003cp\u003eThe Carbon Smart™ 7’ x 9’ x 8’ Indoor Sauna Kit is a well-organized, complete interior package for anyone building a home sauna with quality materials and a clean finish. If you have questions about configuration, heater selection, or installation requirements, contact Finnish Sauna Builders before ordering — the team is available to help you get the right setup the first time.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003cp style=\"text-align:center;\"\u003e\u003csmall\u003eThis product is a sauna room kit intended for use as a personal wellness space. It is not a medical device and is not intended to diagnose, treat, cure, or prevent any health condition. Consult a qualified healthcare provider before use if you have any medical concerns.\u003c\/small\u003e\u003c\/p\u003e\n\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 the Carbon Smart sauna kit include?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The kit includes all interior sauna components: foil vapor barrier, tongue-and-groove wall and ceiling boards, bench boards and supports, corner moldings, duckboard flooring, vent grills, an all-glass sauna door with wood handles and trim, ergonomic backrests, a headrest, a sauna bucket with liner and ladle, a thermometer, a vapor-proof sauna light, and installation instructions. Framing, insulation, electrical wiring, and exterior wall covering are not included.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What do I need to supply that is not in the kit?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"You are responsible for the structural framing, insulation, electrical wiring, and exterior wall covering. If you select a heater option, a licensed electrician must install the heater and dedicated electrical circuit in accordance with local codes.\"\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\\u00b0F using a chemical-free process. This treatment improves dimensional stability and resistance to humidity and temperature changes, making it well-suited for sauna interiors. It also produces a warm, rich tone.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I choose a different bench configuration?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Multiple bench configurations are available and shown in the product images. Each uses 20-inch-deep clear Thermo Poplar bench boards custom-built to your chosen layout.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What are the accessory package options?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"There are four options: No Accessories, Bench Skirting, LED Under-Bench Lighting, and the Luxury Package which includes both bench skirting and LED under-bench lighting.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which heater should I choose for this sauna size?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"All four heater options are rated for rooms larger than this kit's 7x9x8 footprint. The right choice depends on insulation, ceiling construction, and personal preferences. The Virta Combi is the only model with an integrated steam function. Contact Finnish Sauna Builders for guidance.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this kit suitable for DIY installation?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The Carbon Smart kit is designed for both DIY enthusiasts and professional contractors. Detailed installation instructions are included. Electrical work for any heater must be performed by a licensed electrician.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the required rough opening for the sauna door?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The included all-glass sauna door requires a rough opening of 28 inches by 80 inches. The door frame measures 27.2 by 78.7 inches and the glass panel measures 24.4 by 77.3 inches.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I order a custom ceiling height?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The standard recommended ceiling height is 8 feet. 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