36 belt drive whole house fan – 1/2 hp triangle’s whole house fans are an efficient, economical way to cool your home. Moving air at 85 feels as cool as still air at 78, so you can run your air conditioner less. Our whole house fan will cool your home to the outside temperature 5 to 10 times faster than central air conditioning at less than 1/10th the cost. two-speed motor. 115 volt. wall switch included automatic belt tensioning deep pitch four-wing blade for maximum air movement rubber mounted, sealed fan shaft bearings rubber vibration damper between fan and wood frame for quieter operation heavy gauge steel welded construction includes wooden plenum box, rubber mounting gasket and 2 speed switch does not include ceiling shutter or 12 hour timer
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