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.Low-Profile • Hardwired Plunger door switch included Wall- or top-mount UnheatedCompact design for front and back entry doors. Units provide energy savings, comfort, and insect control.UL and C-UL Listed for indoor/outdoor use and UL-EPH Listed to NSF Standard 37.