Roof Wind Turbines Cap Vent Round, Stainless Steel Exhaust Cap Roof Flue Vent, Easy to Install Chimney Cowl, Galvanized Bracket, Unpowered Rotation Mute Rainproof Roof Ventilator Roof Vents

Swivel Chimney Hood, Backflow Antis Chimney Hood Cap Rotator, Stainless Steel Swivel Vent, Rust Resistants, Sturdy Galvanized Bearings, Flat or Slanted Mount, For Wood Stoves, Fireplaces, Chimneys Name: No power hood (fume hood) Material: 304 stainless steel (galvanized inside) Function: ventilation, exhaust, ventilation, heat dissipation Features: 1 weather-resistants curved blade 2. Zero energy consumption cover, environmentally friendly and 3. High speed, low noise, prevents the pipe from being clogged by nests and debris size: 110 mm (4.3 inches) 150 mm (5.9 inches) 200 mm (7.9 in) 250mm (9.8") 300mm (11.8") 350mm (13.8") 400mm (15.7 inches) Package: Vent cap x 1 (110-250mm: 1 clamp, 300mm: 3 fixing feet, 350-400mm: 4 fixing feet)

• Swivel Chimney Hood Material: Made of 304 thick stainless steel, galvanized support frame and highsquality ball bearings
• Smooth Surface: Curved blade baffles are neat and orderly, the edge lines are smooth and rounded, polished surface design, maintenance-free, can be used for a long time
• Ventilation and Exhaust: As a deflector for the flue gas, it prevents the flue gas from flowing back into the room from the ventilation pipe, discharges the dirty air, smoke and dry heat in the room, and keeps the chimney from rain and moistures
• Zero energy consumption: Use natural wind to makes it rotate, and create a vacuum/vortex in the channel where it is installed, sucking smoke and dirty air from the inside, without any power loss, long service life
• Application: suitable for chimneys, farms, factory roofs, residential buildings, ventilation ducts, warehouses, etc.