product description:
Air curtain is NOT an air conditioner. Air curtain is a powerful fan that forcing a high speed air stream over the entrance to isolate the interior and exterior air environment. It consumes less energy than an air conditioner. Air curtains are widely installed at the entrances of supermarket, theater, hotel, food storage warehouse, residential, etc. It keeps the flying insects out and keeps conditioned air inside, reduces energy costs. With the optional micro door switch properly installed (refer to the User Manual in Technical Specification section), automatically turn on the air curtain with door open; and shut off the air curtain with door close. High speed powerful air blow is for high entrance, and to keep the flying insects out. Low speed is for office, restaurant or residential door entrance or drive-thru window. This air curtain really pushes a lot of air, the sound is from the high speed air circulation as same as a powerful home fan at the highest speed.
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