16" Standard Enervex Chimney Fan RS016 Chimney Liners and other ultra high-capacity appliances

and other ultra high-capacity appliances requiring a larger 18" venting system

and high-BTU heating systems that require maximum venting capacity

and chimney acids Safety Helps keep flue gases inside the liner and reduce the risk of carbon monoxide leaks Warranty Lifetime warranty (transferable) This 8

Its oval shape allows for proper venting while fitting into tight or rectangular chimney flues

and 15" oval sizes

16" Standard Enervex Chimney Fan RS016 Chimney Liners and other ultra high-capacity appliancesEnervex Chimney Fans are an easy, 100% effective solution to chimneys with draft problems, improperly sized flues, low termination heights, poor design or negative pressure problems. These are designed to suck the smoke from the chimney out. This standard chimney fan is recommended for gas fireplaces and stoves. The fan also is nearly invisible from the ground.