Unhtd 17"H 36"W 26"D Alumin Air Curtain: For 3 ft Opening Wd, 1,460 cfm, 115V AC, 1 Ph, White

Ambient recess-mounted air curtains install into the ceiling above an opening and reduce air exchange between interior and exterior air. They create an air barrier by drawing in ambient air and blowing it out of a nozzle at high speed.