Stainless Steel Turbine Caps

Stainless Steel. Stops Down Drafting. Wind driven, the slightest breeze provides positive ventilaton with no chance of down drafting. It enclosed ball bearing system. There is no additional maintenance need. Please Note: This type of cap only works when the wind blows. It will not solve the smoking problem caused by the negative air pressure of a poor drafting chimney. It can be adapted to a square or rectangular masonry chimney with our adaptor plate. Made in the USA.