These SF shutter exhaust fans have a totally enclosed motor and comes complete with built in speed switches and a 9' cord. no electrician is required, just mount the fan in the wall and plug it into an approved receptacle. the corrosion resistant aluminum shutter comes complete with a tie bar to reduce shutter flapping and keep the shutters closed when the fan is not running. on the intake side of the fan the balanced aluminum blade is protected by a strong painted grill. features: built in speed switch with 9' cord attachedcomes totally assembled out of the boxtotally enclosed maintenance free motorcorrosion resistant aluminum shutter with tie bar to reduce shutter flapping and opening on windy dayssafety painted grill on intake side meets osha standards motor features: csa/csa-us approved50/60 hzf class insulatedfollow nema standards either 48 or 56 framedupont nomex insulationrotors have been balanced to reduce noise vibration and prolong lifemotor enclosures have been machined to 0. 5mm to reduce rotor shaft playcsa/csa-us for an ambient temperature of 40 deg. C but will stand up to 65 deg. C (149 deg. F)copper windings rated at h classbearing specifications - 40deg. C to 140 deg. Ccapacitor rating 450vac, 10,000 hours for extended lifesilicon steel rotors and stators applications: designed for agricultural, horticultural,factories, warehouses, garages, attics and restaurantsremove and control unwanted condensationexhaust obnoxious fumesexhaust excessive heatimprove inside air quality * rough in opening = 20. 5 inch square
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