EJGMCNSGB 304 Stainless Steel Roof Rotating Vents Cap for Chimney Cowl Exhaust Wind Turbine Cap with Unpowered Rotation Attic Air Ventilation Fan Easy to Install (200mm/7.9in)
EJGMCNSGB
304 stainless steel material: Stainless steel is very robust and rust-resistant. It can also withstand high temperatures and acid, making it suitable for use in harsh conditions. Working principle: The natural wind and thermal air convection are caused by the temperature difference between indoor and outdoor to drive the turbines and exhaust the used indoor air. Silent and rainproof: The roof ventilation turbines rotate silently. The encrypted blade pitch is small enough to prevent rainwater from entering the ventilation system. It also keeps birds and rodents away. Wide application: Suitable for chimneys, farms, factory roofs, ventilation shafts, houses, warehouses, etc. It can be easily installed on slopes from 0 to 22.5 degrees, on flat or inclined surfaces. Installation: The hood is equipped with two types of installation accessories, a clamp and a 90° fixed foot. Small sizes can be installed with clamps to avoid gaps, and large sizes can be fixed with 90° fixed feet.
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