1592953475000 1312632483000 term-53153 1616541449322 1312632547000 1616290373574 adlib fitz-online adlib-term-53153 bc4c3f1c-3a2e-3a35-ae3d-58ec61b5b316 2 1 scope note Streams of high-velocity, temperature-controlled air which are directed downward across an opening to prevent transfer of heat across it, thus making it possible to air condition a space having an open entrance. reference term-53152 adlib-term-53152 7db53e9c-ac7c-3d39-885e-1966fe739682 air curtain V.PJ.AFU.ALO.ARI.ARI.AFU.AFU.ALO.ALO.AFU 1 code V.PJ.AFU.ALO.ARI.ARI.AFU.AFU.ALO.ALO.AFU 1 air curtains reference term-53182 adlib-term-53182 108c68e1-09d6-3176-b7f4-1eba534a896c <doorway components> air curtains term