Turbine Ventilator,Roof Ventilator Stainless Steel -Cyclone.

STAINLESS STEEL:This chimney cap made up of 304 stainless steel will not rust, fall off or break and easy to clean. GRID: Wall vents have aluminum alloy mesh, blinds to prevent mosquitoes from entering, preventing birds from nesting. SHAPE: the shape of the ball, the downward protruding slats prevent rain from entering the ventilation system. SAFETY:Expanded metal mesh turned inward at base allows cover to rest firmly on flue tile, closing any openings to protect against nuisance wildlife. INSTALLATION:Easy to install, sturdy and durable. External installation provides more freedom.