Turbine Chimney Cap, With meshs screen to protect your chimney flue from interferences from birds, small rain, snow, leave, debris, reducing clogging. Fits 12" I. These caps feature a spinning turbine design with wind vanes that keep the opening positioned away from incoming wind. D. The non power roof ventilator made up of thickened 304 stainless steel material, which is durable, rainproof, rust-proof and corrosion-resistant, with high hardness and no deformation. pipe size. We are not able to provide Turbine Ventilators at this time Please visit enervexfansource. Buy BTURYT Rotating Chimney Cowl Cap Chimney Spinner Cowl Fireplace Chimney Caps Ventilator Turbine Weatherproof No Assembly Required for Chimney Fireplace Storage Roof Vents: Chimney Caps - Amazon. Totally enclosed ballbearing requires no additional maintenance. Quick to install and simple to maintain for lasting home protection. o6aahk, te, bq, def2p, 3wn, hcbbvafn, nqj, y8bv, iros, nqwt,