The Harvia WZ11520 smoke pipe is made of stainless steel, being compatible with all Harvia wood-heated sauna wood burning heaters (except Harvia 50) and the Harvia 10 iron wood burning heater. The CE certification can put your mind at ease knowing it's the best in safety. This soot fire-proof smoke pipe is the best choice. compatible with all Harvia wood-heated sauna wood burning heaters (except Harvia 50) and the Harvia 10 iron wood burning heater Dimensions: 7.9"H x 4.5" D x 4.5" W