{"product_id":"cozy-heat-og-thru-wall-sauna-stove","title":"Cozy Heat OG Thru-Wall Sauna Stove | COZYOGTW12, COZYOGTW18","description":"\u003cstyle\u003e\n.rca-pdp{font-family:Arial,sans-serif;font-size:15px;line-height:1.7;color:#232323;width:100%;max-width:100%;margin:0;padding:0;box-sizing:border-box}\n.rca-pdp *{box-sizing:border-box;max-width:100%}\n.rca-pdp h2{font-size:22px;font-weight:bold;color:#232323;margin:0 0 12px;line-height:1.3}\n.rca-pdp h3{font-size:18px;font-weight:bold;color:#232323;margin:28px 0 12px}\n.rca-pdp p{margin:0 0 20px}\n.rca-pdp ul,.rca-pdp ol{margin:0 0 28px;padding-left:20px;line-height:1.7;color:#232323}\n.rca-pdp li{margin-bottom:8px}\n.rca-pdp a{color:#323f4e;text-decoration:underline}\n.rca-pdp .rca-note{font-size:14px;color:#3F7276;margin-bottom:16px}\n.rca-pdp .rca-flex{display:flex;gap:16px;margin-bottom:28px;flex-wrap:wrap}\n.rca-pdp .rca-box{flex:1 1 260px;min-width:0;border-radius:6px;padding:16px}\n.rca-pdp .rca-box ul{margin:0;padding-left:20px}\n.rca-pdp .rca-best{background:#E8F5E9;border-left:4px solid #4CAF50}\n.rca-pdp .rca-not{background:#FFEBEE;border-left:4px solid #EF5350}\n.rca-pdp .rca-why{background:#E8F4F8;border-left:4px solid #3F7276;border-radius:6px;padding:16px;margin-bottom:28px}\n.rca-pdp .rca-warn{background:#FFF8E1;border-left:4px solid #F5C842;border-radius:6px;padding:16px;margin-bottom:28px}\n.rca-pdp .rca-req{background:#F5F5F5;border-left:4px solid #CCCCCC;border-radius:6px;padding:16px;margin-bottom:28px}\n.rca-pdp h4.rca-label{font-size:13px;margin:0 0 6px}\n.rca-pdp .rca-label{font-size:13px;font-weight:bold;text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px;color:#232323}\n.rca-pdp table{border-collapse:collapse;width:100%;margin-bottom:16px;table-layout:fixed}\n.rca-pdp th{background:#3F7276;color:#fff;font-weight:bold;padding:10px 12px;text-align:left;font-size:14px}\n.rca-pdp td{padding:10px 12px;border-bottom:1px solid #e5e5e5;color:#232323;vertical-align:top}\n.rca-pdp tbody tr:nth-child(odd){background:#F9F9F9}\n.rca-pdp col.c1{width:38%}.rca-pdp col.c2{width:31%}.rca-pdp col.c3{width:31%}\n.rca-pdp col.h1{width:44%}.rca-pdp col.h2{width:56%}\n.rca-pdp .rca-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}\n.rca-pdp .rca-scroll:focus{outline:2px solid #3F7276;outline-offset:2px}\n.rca-pdp caption{caption-side:top;text-align:left;font-weight:bold;font-size:14px;padding:0 0 8px;color:#232323}\n.rca-pdp .rca-swipe{display:none}\n.rca-pdp details{margin-bottom:12px;border-bottom:1px solid #e5e5e5;padding-bottom:12px}\n.rca-pdp summary{font-weight:bold;cursor:pointer;color:#232323;padding:12px 0;min-height:44px;line-height:1.4}\n.rca-pdp details p{padding:10px 0 4px;margin:0}\n@media (max-width:640px){\n.rca-pdp{font-size:16px;padding:0 12px}\n.rca-pdp h2{font-size:20px;line-height:1.35}\n.rca-pdp h3{font-size:17px}\n.rca-pdp .rca-box{min-width:100%}\n.rca-pdp table{font-size:13px}\n.rca-pdp th{padding:8px 6px;font-size:12px;line-height:1.3}\n.rca-pdp td{padding:8px 6px;line-height:1.4;overflow-wrap:anywhere}\n.rca-pdp td:first-child{font-weight:bold}\n.rca-pdp .rca-wide{min-width:560px}\n.rca-pdp .rca-swipe{display:block;font-size:12px;color:#3F7276;margin-bottom:16px}\n}\n\u003c\/style\u003e\n\u003cdiv class=\"rca-pdp\"\u003e\n\n\u003ch2\u003eCozy Heat OG COZYOGTW12 and COZYOGTW18: the design cage, fed from next door\u003c\/h2\u003e\n\n\u003cp\u003eThe Cozy Heat OG Thru-Wall keeps the barrel cage of rods and angular blades inside the sauna and moves the firebox door into the room behind. It carries more stone than the base model, 265 lb on the COZYOGTW12 against 243 lb on the standard Thru-Wall, and none of the wood or ash ever reaches the benches. The COZYOGTW12 heats a home sauna room of 210 to 423 cu ft and the COZYOGTW18 covers 317 to 635 cu ft. Both are \u003ca href=\"\/collections\/wood-burning-sauna-heaters\"\u003ewood burning sauna heaters\u003c\/a\u003e that install through a masonry wall with no power and no wiring, and the only routine jobs are emptying the ash box and restacking the stones once per year. Stones and chimney are used with the stove and both are sold separately.\u003c\/p\u003e\n\n\u003cp class=\"rca-note\"\u003e✓ RecovAthlete is an authorized Cozy Heat dealer. Orders include the factory warranty and direct manufacturer support.\u003c\/p\u003e\n\n\u003ch3\u003eThe Promise\u003c\/h3\u003e\n\n\u003cp\u003eIf the stove is going to be the only object in the room, it should be worth looking at. The OG cage is built from vertical rods with flat steel blades set over them, so the stone shows through in a pattern. Moving the firebox through the wall removes the one part that is not attractive: the door, the handle, the wood pile and the ash.\u003c\/p\u003e\n\n\u003cdiv class=\"rca-warn\"\u003e\n\u003ch4 class=\"rca-label\"\u003eIMPORTANT: THE WALL HAS TO BE MASONRY, AND NO MORE THAN 5.9 IN THICK\u003c\/h4\u003e\n\u003cp style=\"margin:0;\"\u003eThe Thru-Wall models install into an opening in a concrete or brick wall. A standard timber stud wall will not do. Maximum wall thickness is 5.9 in, the opening must be at least 10.0 in wide, and the bottom of the opening must sit at least 17.3 in above the floor. Measure before you order. These stoves are CE marked under Construction Products Regulation 305\/2011 EU and tested to EN 15821:2010 by TUV SUD, notified body 0036, but there is no UL, ETL or CSA listing, so confirm with your building department and your insurer. Lead time is 60 days from Estonia on LTL freight. If either the wall or the permit is a problem, buy the \u003ca href=\"\/products\/cozy-heat-og-sauna-stove\"\u003eCozy Heat OG\u003c\/a\u003e and load it from inside the room.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"rca-why\"\u003e\n\u003ch4 class=\"rca-label\"\u003eWhy Buy This From RecovAthlete\u003c\/h4\u003e\n\u003cp style=\"margin:0 0 10px;\"\u003eYou can find a cheaper wood sauna stove. You cannot buy this one cheaper: Cozy Heat sets the price and every dealer holds it. What changes is what comes with the order.\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:20px;\"\u003e\n\u003cli\u003eWe check the wall first. Thickness, opening size and height off the floor, before the order goes in. On a 60 day lead time from Estonia that call is the one that saves the order.\u003c\/li\u003e\n\u003cli\u003eAuthorized dealer, so the 24 month factory warranty is valid and Cozy Heat supports the stove directly.\u003c\/li\u003e\n\u003cli\u003eWhite glove delivery is available as a paid add-on. The crew brings it into the room you want instead of leaving 198 lb of stove at the curb.\u003c\/li\u003e\n\u003cli\u003eFinancing through Affirm, Brickhouse, Reliant and Acorn.\u003c\/li\u003e\n\u003cli\u003eMulti-unit pricing, consolidated freight, and a person on the phone at 866-861-6317.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eThe specs back that up. The COZYOGTW18 runs at 81.3% overall efficiency with a flue gas temperature of 234 °C \/ 453 °F. The COZYOGTW12 runs at 73.9%. Dust emission is 22 mg\/m³ and 35 mg\/m³. Both burn wood logs only, up to 30 cm \/ 11.8 in, loaded on the grate at the back of the chamber rather than in the extension. Both are black steel with a 114 mm \/ 4.49 in flue that exits from the top.\u003c\/p\u003e\n\n\u003cp\u003eThe wall decides this one, and the numbers are in the callout above. The extension pushes the stove depth to 25.8 to 27.4 in on the COZYOGTW12 and 30.1 to 31.7 in on the COZYOGTW18. Inside the sauna, clearances match the standard model: 6.7 in to the sides on the 12 kW and 9.1 in on the 18 kW, with 44.5 in of headroom above the COZYOGTW12 and 52.8 in above the COZYOGTW18. Nothing is hardwired. Empty the ash box each session and restack the stones once per year.\u003c\/p\u003e\n\n\u003cdiv class=\"rca-flex\"\u003e\n\u003cdiv class=\"rca-box rca-best\"\u003e\n\u003ch4 class=\"rca-label\"\u003eBest For\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRooms where the stove is the design feature and there is a masonry wall behind it.\u003c\/li\u003e\n\u003cli\u003eOwners who want more stone than the base model without going up to the SW.\u003c\/li\u003e\n\u003cli\u003eShared saunas where guests should never reach the firebox.\u003c\/li\u003e\n\u003cli\u003eLong session bathers who refuel without opening the sauna door.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rca-box rca-not\"\u003e\n\u003ch4 class=\"rca-label\"\u003eNot Ideal For\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003cli\u003eAnyone whose inspector or insurer requires a UL, ETL or CSA listed appliance.\u003c\/li\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003cli\u003eTimber stud walls. The opening has to be concrete or brick, 5.9 in thick at most.\u003c\/li\u003e\n\u003cli\u003eNarrow rooms. At 19.6 in wide on the 12 kW this is the widest Thru-Wall in the range.\u003c\/li\u003e\n\u003cli\u003eFreestanding saunas with no adjacent room. Buy the \u003ca href=\"\/products\/cozy-heat-og-sauna-stove\"\u003estandard Cozy Heat OG\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eBenefits and Features\u003c\/h3\u003e\n\n\u003cdiv class=\"rca-scroll\" tabindex=\"0\" role=\"region\" aria-label=\"Benefits and the feature behind each one\"\u003e\n\u003ctable class=\"rca-wide\"\u003e\n\u003ccaption\u003eBenefits and the feature behind each one\u003c\/caption\u003e\n\u003ccolgroup\u003e\n\u003ccol class=\"h1\"\u003e\n\u003ccol class=\"h2\"\u003e\n\u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eWhat you get\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eThe feature behind it\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMore steam per pour than the base Thru-Wall\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e265 lb of stone on the COZYOGTW12 against 243 lb on the standard COZYTW12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eA stove that finishes the room\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBarrel cage of vertical rods with flat angular blades set over them\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNo wood, bark or ash inside the sauna\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFire chamber extension passes through the wall so the door opens in the next room\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLess wood per session\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThree stage air feed burns the flue gases as well as the wood. 81.3% efficiency on the COZYOGTW18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThe hottest part is the part they overbuilt\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFlame cutter in 5 mm stainless steel, the component that takes the most heat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cspan class=\"rca-swipe\"\u003eSwipe the table sideways\u003c\/span\u003e\n\n\u003ch3\u003eCOZYOGTW12 or COZYOGTW18\u003c\/h3\u003e\n\n\u003cdiv class=\"rca-scroll\" tabindex=\"0\" role=\"region\" aria-label=\"Specifications by model\"\u003e\n\u003ctable class=\"rca-wide\"\u003e\n\u003ccaption\u003eSpecifications by model\u003c\/caption\u003e\n\u003ccolgroup\u003e\n\u003ccol class=\"c1\"\u003e\n\u003ccol class=\"c2\"\u003e\n\u003ccol class=\"c3\"\u003e\n\u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSpec\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eCOZYOGTW12\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eCOZYOGTW18\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003e12 kW\u003c\/td\u003e\n\u003ctd\u003e18 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoom volume\u003c\/td\u003e\n\u003ctd\u003e210 to 423 cu ft\u003c\/td\u003e\n\u003ctd\u003e317 to 635 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone load\u003c\/td\u003e\n\u003ctd\u003e265 lb\u003c\/td\u003e\n\u003ctd\u003e353 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStove weight\u003c\/td\u003e\n\u003ctd\u003e139 lb\u003c\/td\u003e\n\u003ctd\u003e198 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e19.6 in\u003c\/td\u003e\n\u003ctd\u003e22.1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDepth, door to handle\u003c\/td\u003e\n\u003ctd\u003e25.8 to 27.4 in\u003c\/td\u003e\n\u003ctd\u003e30.1 to 31.7 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e27.9 in\u003c\/td\u003e\n\u003ctd\u003e29.7 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax log length\u003c\/td\u003e\n\u003ctd\u003e13 in\u003c\/td\u003e\n\u003ctd\u003e13 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency\u003c\/td\u003e\n\u003ctd\u003e73.9%\u003c\/td\u003e\n\u003ctd\u003e81.3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSide clearance\u003c\/td\u003e\n\u003ctd\u003e6.7 in\u003c\/td\u003e\n\u003ctd\u003e9.1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCeiling above stove\u003c\/td\u003e\n\u003ctd\u003e44.5 in\u003c\/td\u003e\n\u003ctd\u003e52.8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin wall opening width\u003c\/td\u003e\n\u003ctd\u003e10.0 in\u003c\/td\u003e\n\u003ctd\u003e12.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin opening height from floor\u003c\/td\u003e\n\u003ctd\u003e17.3 in\u003c\/td\u003e\n\u003ctd\u003e18.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cspan class=\"rca-swipe\"\u003eSwipe the table sideways\u003c\/span\u003e\n\n\u003cp\u003ePick by room volume, not by how much heat you want. Non-insulated brick, glass, tile or concrete adds to the load: count an extra 1.2 m³ per square metre. Massive log walls multiply the volume by 1.5.\u003c\/p\u003e\n\n\u003ch3\u003eWho Buys the Cozy Heat OG Thru-Wall\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe owner building a room they will show people.\u003c\/strong\u003e Nothing in the sauna but stone, steel and benches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe buyer who wants more rock.\u003c\/strong\u003e 22 lb more than the base Thru-Wall on the 12 kW.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe operator of a shared sauna.\u003c\/strong\u003e Guests never get near the firebox.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"rca-req\"\u003e\n\u003ch4 class=\"rca-label\"\u003eBEFORE YOU ORDER\u003c\/h4\u003e\n\u003cp style=\"margin:0;\"\u003eMeasure the wall first. You need a concrete or brick wall no more than 5.9 in thick, with an opening at least 10.0 in wide and at least 17.3 in up from the floor. Allow 23.6 in of clearance from the sides of the opening and 37.8 in above it. The hearth frame is not included on Thru-Wall models. Stones are not included either: 265 lb for the COZYOGTW12 or 353 lb for the COZYOGTW18, which is 5 boxes on the 12 kW or 7 boxes on the 18 kW, in peridotite, olivine-dolerite or olivine. Cozy Heat publishes three different stone size ranges, so confirm the fraction with us first. The chimney is separate and connects with a 114 mm \/ 4.49 in pipe from the top. Load firewood on the grate at the back of the chamber, not in the extension, and keep logs to 30 cm or under.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eOG Thru-Wall or SW Thru-Wall\u003c\/h3\u003e\n\n\u003cp\u003eBoth carry 265 lb of stone on the 12 kW. The OG is 27.9 in tall and 19.6 in wide. The \u003ca href=\"\/products\/cozy-heat-sw-thru-wall-sauna-stove\"\u003eCozy Heat SW Thru-Wall\u003c\/a\u003e is 32.1 in tall and 19.3 in wide, and it pulls ahead on the 18 kW at 397 lb against 353 lb. Low ceiling, take the OG. Steam volume above everything, take the SW. The \u003ca href=\"\/products\/cozy-heat-thru-wall-sauna-stove\"\u003ebase Cozy Heat Thru-Wall\u003c\/a\u003e is the narrowest at 16.9 in.\u003c\/p\u003e\n\n\u003ch3\u003eAlso Consider\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/cozy-heat-og-sauna-stove\"\u003eCozy Heat OG\u003c\/a\u003e. The standard mount version, if there is no adjacent room.\u003c\/li\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/cozy-heat-sw-thru-wall-sauna-stove\"\u003eCozy Heat SW Thru-Wall\u003c\/a\u003e. Taller, narrower, and the most stone in the range.\u003c\/li\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/cozy-heat-thru-wall-sauna-stove\"\u003eCozy Heat Thru-Wall\u003c\/a\u003e. The narrowest Thru-Wall at 16.9 in, with 243 lb of stone.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cdetails\u003e\u003csummary\u003eAre the stones included?\u003c\/summary\u003e\n\u003cp\u003eNo. The COZYOGTW12 needs 265 lb, the COZYOGTW18 needs 353 lb. That is 5 boxes on the 12 kW or 7 on the 18 kW, in split-face Traditional or Premium Rounded olivine diabase. Cozy Heat quotes three different size ranges across their own sources, so call us before you order stone.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eWhat size chimney pipe does it take?\u003c\/summary\u003e\n\u003cp\u003e114 mm \/ 4.49 in from the top. Minimum flue cross-section 7,850 mm² \/ 12.2 sq in, draught 12 Pa. No shared flues.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs it UL or ETL listed?\u003c\/summary\u003e\n\u003cp\u003eNo. It is CE marked under CPR 305\/2011 EU and tested to EN 15821:2010 by TUV SUD, notified body 0036. Those are European standards. There is no North American listing. Check your local requirements first.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eHow long does delivery take?\u003c\/summary\u003e\n\u003cp\u003eLead time is 60 days. The stoves are built in Estonia and ship by LTL freight.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty?\u003c\/summary\u003e\n\u003cp\u003e24 months from purchase against manufacturing defects, proof of purchase required. It excludes metal deformation, surface coating and door glass.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eHow much room do I need above the stove?\u003c\/summary\u003e\n\u003cp\u003e44.5 in from the top of the COZYOGTW12 to the ceiling, and 52.8 in above the COZYOGTW18.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eWhat kind of wall do I need?\u003c\/summary\u003e\n\u003cp\u003eConcrete or brick, 5.9 in thick at most. A timber stud wall will not work. The opening needs to be at least 10.0 in wide on the 12 kW or 12.4 in on the 18 kW, sitting at least 17.3 in or 18.5 in above the floor, with 23.6 in clear at the sides and 37.8 in above.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eWhat else should I know before installing?\u003c\/summary\u003e\n\u003cp\u003eThe hearth frame is not included on Thru-Wall models. Logs go to 30 cm \/ 11.8 in maximum, loaded on the grate at the back of the chamber rather than in the extension.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch3\u003eWhy This Is the One to Buy\u003c\/h3\u003e\n\n\u003cp\u003eYou get the best looking cage in the range, 22 lb more rock than the base model, and a sauna with no firebox door in it. The trade is 19.6 in of width, so measure the bench gap before you order.\u003c\/p\u003e\n\n\u003cp\u003eNot sure the 19.6 in width and the wall opening both work? Call 866-861-6317, 9am to 6pm EST, Monday to Friday, and we will size it against your room before you order.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Cozy Heat","offers":[{"title":"COZYOGTW12 | 12 kW | 210 to 423 cu ft | thru-wall","offer_id":49767056015512,"sku":"COZYOGTW12","price":2452.5,"currency_code":"USD","in_stock":true},{"title":"COZYOGTW18 | 18 kW | 317 to 635 cu ft | thru-wall","offer_id":49767056048280,"sku":"COZYOGTW18","price":2857.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0422\/3942\/6712\/files\/COZYOGTW12-01_ab0785e1-68a4-4537-b9c6-ae5d3fe819b5.webp?v=1788005112","url":"https:\/\/recovathlete.com\/products\/cozy-heat-og-thru-wall-sauna-stove","provider":"RecovAthlete","version":"1.0","type":"link"}