Air Curtains • Units include all necessary controlsStabilize environments and save energy by minimizing the loss of heat or air-conditioned air through open doorways, and effectively repel flying insects, dust, and pollutants. The curtains also eliminate the need for plastic-strip doors over walk-in coolers or food processing areas.Multipurpose, High-Velocity • Hardwired Plunger door switch included Control panel included Wall- or top-mount UnheatedUse on shipping/receiving and loading dock doors. Factory-installed control panel on left end of cabinet; NEMA 4/12 industrial enclosure, motor contactor, 120V transformer (as required), fusing (as required), and terminal strip. Units block wind and provide energy savings, comfort, and insect control.UL and C-UL Listed for indoor/outdoor use.