10" Stainless Steel Turbine Cap

Stops Down Drafting. Wind driven, the slightest breeze provides positive ventilaton with no chance of down drafting. Totally enclosed ball bearing system. No additional maintenance. Please Note: This type of cap only works when the wind blows. It will not solve a smoking problem cause by negative air pressure of a poor drafting chimney. Will fit into a 10" round metal or masonry chimney. Can be adapted to a square or retangular massony chimney with our adaptor plate. Made in the USA.