Harvia Stainless Steel Chimney Extension 1M (39 5/8) for Sauna Heater. The WHP1000 chimney extension is a stainless steel 1m insulated chimney pipe that pairs with the WHP1500 Chimney Kit. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Sauna Heaters". The seller is "saunaplace" and is located in this country: US. This item can be shipped to United States.