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Best in class efficiency measured by CFM/Watt (cubic feet/minute/Watt)
5052 light aircraft grade aluminum alloy louvers for least air resistance
Non-rusting extruded aluminum shutter frame
Shutters automatically open and close
Corrosion resistant, baked powder painted guards tested to 500 hour salt spray
Hi-efficiency 100% copper wound motors with permanently-lubricated ball bearings
Totally enclosed, air over motors, IP155 rated
Fully assembled, easy to mount pre-drilled flange patterns
UL 705 safety certified
4450 CFM
4450 CFM Shutter Exhaust Fan Wall Mounted, Dual Speed