Pioneer commercial heavy duty air curtains are made up of heavy duty galvanized steel structure with attractive ABS sectional grills and fully adjustable discharge louvers. High velocity air screen is created using a powerful motor and two dual inlet centrifugal blowers. Quiet but efficient operation. Pioneer GA series air curtains plug into standard receptacle and offer a 2 speed fan selector. They are suitable for indoor use only, for doors up to 10 foot high. Blocks the heated or cooled air from leaking to the outside and also blocks odors and pests from entering inside. Air curtains are also called Air Doors or Air Screens. Air curtains or Air Doors are the perfect devices for separating two spaces from each other, and they are placed usually at the exterior entrance. Pioneer air curtains are downward-facing blower+fan modules, mounted over an opening, blowing air across the surface of the opening, which can be an entrance to a building or between two spaces conditioned at difference temperatures. The fans used are powerful enough to generate a jet of air that can reach the floor, reducing energy costs. Some applications include customer entryways, airplane hangars, cargo doors, drive through windows, restaurant doors, cold storage doors, or shipping receiving doors. The air stream the air curtain creates across the opening acts as an invisible barrier to contain an air conditioned space and reduce infiltration. Pioneer air curtains can pay for themselves in one to two years by reducing the load on the building's heating or air conditioning system. A door switch may be added, to turn the unit on and off as the door opens and closes, so the Air Curtain only operates when the door is open.