Roof Wind Turbines Cap Vent Round, Stainless Steel Exhaust Cap Roof Flue Vent 15.7" ~ 4.3" Air Vent Outlet Roof Ventilator, Easy to Install, Galvanized Bracket, Unpowered Rotation

Chimney cover cover cover, stainless steel flue pipe top cover cover cap, the top exhaust rotation cover of the ventilated rotation cover, the top cover of the ventilated mouth without power hats --- Rotating cover for ventilation pipes, chimneys and air extraction. The protective gear provides a maximum protection without affecting the performance of the chimney. --- Easy to install: There is no need to assemble the turbines ventilation outlet, just take it out and install it where the need is needed. Including all installation accessories. --- stainless steel rotating chimney cover: The rotor antissinking air current is suitable for most standard chimney pots to prevents wind and increase ventilation. --- The hat is designed to rotate with the wind, so the more wind blows, the more the leaves rotate, and the strongers the wind from the inside out. Specification: Size: 110mm -4.3in, 150mm -5.9in, 160mm -6.3in, 200mm -7.9in, 250mm -9.8in, 300mm -11.8in, 400mm -15.7in Material: 304 stainless steel Package Contents: 1*Stainless steel top cover (with accessories)

• Rotating chimney cap: made of thickened stainless steel material, will not rust, waterproof and , long service life. Easy to clean. Multiple sizes
• Variable angle neck pipe: It allows the ventilator to be installed under 0- 22.5 degree slope as you like, and the installation works are very easy. Galvanized bearing: Its strength is strong enough to withstand 200km/h wind speed and 100KG load pressure without deformation damage.
• No noise and rainproof: the curved fan blade encrypted blade can ensure that rain never intrudes under working condition. High exhaust efficiency Can run lightly. Protects your chimney from rain and moistures. Includes complete fixing kit for easy installation
• Practical: Very effective in preventings sinking drafts and increasing ventilation. The rings of the chimney hood keeps the wind from flowing down the chimney, the perfect solution to prevents sagging drafts
• Principle of : natural breeze and air thermal convection caused by the temperature difference between indoor and outdoor drives the turbines to rotate and exhaust stale indoor air