Air Vent Cover,Stainless Steel Air Vent, for Fan, Roof Ventilation High Exhaust Efficiency Roof, Weather Roof Vent Exhaust Fan Ventilator Hood, Rotating Chimney Exhaust Cap Flue(110mm 4.3in)

Stainless Steel Pipefit Roof Ventilating Fan Wind Turbines Air Vent Attic Ventilator Rotating Chimney Cowl Cap Roof Vents for Houses Factory Attic1. Strong 304 stainless steel2. Fits most standard chimney pot bases3. Easy to install4. Noiseless, rainproof and windproof5. High exhaust efficiency6. No electricity costs (no power vents)MULTIPURPOSE: Swivel hoods for vent ducts, chimneys and exhausts provide maximum protection without affecting chimney performanceThrough the variable angle neck tube design, the ventilator can be installed at a slope of 0-22.5 degrees. Bearings with zinc are strong enough to withstand wind speeds of 200 km/h and loads of 100 kg without deformation or damage.Specification:Size: 110mm -4.3in, 150mm -5.9in, 160mm -6.3in, 200mm -7.9in, 250mm -9.8in, 300mm -11.8in, 400mm -15.7inMaterial: 304 stainless steelPackage Contents:1*Stainless steel top cover (with accessories)♦ Notice : Please wear gloves when installing!

• ♥ Turbines ventilator: uses the convection theory between natural wind and air to accelerate and convert any parallel airflow into vertical airflow to improve indoor ventilation.
• ♥ Stainless steel material: The roof turbines vent is made of thickened 304 stainless steel material, which will not is strong . Suitable for use in harsh conditions.
• ♥ Suitable for machine shops, farms, restaurants, residences, roof chimneys, improving indoor air environment and accelerating circulation ventilation
• ♥ Silent: The roof ventilator uses natural wind power to makes it rotate, working continuously and silently. Suitable for residential or light commercial use.
• Easy to install and durable, just push-fit duct and fittings together.