Awoco FM-3510L/Y-M 42" Elegant 2 Speeds 1000 CFM Indoor Air Curtain with an Easy-Install Magnetic Door Switch

Air curtain is a powerful fan that forces 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, warehouse, residential, etc. It keeps the flying insects out and keeps conditioned air inside, reducing energy costs.

The magnetic switch can be simply stuck to the middle of door and door frame, no bracket needed. Works easily with most doors and windows. Automatically turn on air curtain with door open; shut off air curtain with door close.

High speed powerful air blow is for regular 7 to 8 feet office, restaurant or residential door entrance. Low speed is for quiet area entrance or drive-thru window. This air curtain is quieter than the super power FM15 series because it generates 30% to 50% less air flow. The sound is from the high speed air circulation similar to a home fan at the highest speed.