Low-profile commercial air door; Reduces energy costs and re-circulated warm air inside building; Low noise level; Stainless steel housing and blowers; (1) 2-speed motor; (2) blower wheels; Automatic door plunger switch allows air door to be instantly turned on when door is opened; Built-in high/low/off speed selector switch; 6-foot cord with 3-prong plug; NSF approved for entrances up to 7 feet high; 47 1/4"W x 8 1/2"D x 10"H; Standard electrical is 120/60/1 - 1/6 HP; 1 year parts warranty
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