Fits all standard single wall pipe.. Fits all stoves with 6 in. flue pipe. Cast iron and steel construction for years of service. Spring-loaded pin keeps damper secure. Cool-touch spring handles helps prevent burns. Assembly required. 6 in. L x 6 in. W x 1 in. L (1.5 lbs). This all cast iron stove damper helps regulate burn rate in wood stoves and coal stoves. Durable cast iron damper. With spring loaded removable steel shaft. Closed by formed spring wire button on shaft end. Fits all standard single wall pipe.