The Harvia WHP500M Chimney Extension is a 0.5-meter (19 5/8”) insulated chimney pipe designed to extend the height of your Harvia chimney system. Made from durable black steel, this extension pairs with the WHP1500M Chimney Kit, providing a seamless fit and ensuring safe and efficient venting of smoke and gases from wood-burning sauna stoves. Ideal for achieving the required chimney height for optimal draft, this insulated extension helps maintain high performance and safety in your sauna.