roof ventilator

Aluminium alloy with 20µm fluorine carbon coating and 304/2B stainless stell.
Two NSK permanently lubricating bearings.
Light weight and sensitive revolving.
No energy cost ,noiseless,efficient exhausting.
Rust resistant and anti-corrosive.
Removes moisture build up in winter.
Low maintenance and easy installation.
Wide range of colors to match with any roof.
Can be used for long-term.
roof ventilator