Built for all HUUM wood-fired sauna stoves, the HUUM Thru-Wall Chimney Kit 102.4" sends smoke and heat directly outside through the wall. That space-saving route leaves more freedom in the sauna layout, and the kit works for new installations as well as upgrades. Its stainless steel parts are made to handle extreme heat, environmental exposure and corrosion. The set brings single-wall and double-wall pipes, 90° elbows (the single-wall elbow with a cleaning hatch), a chimney base, wall brackets, two-part wall cover plates and a rain cap. Designed and engineered in Estonia, it carries a 5-year limited warranty.