... control) -slim and beautiful designe -back plate for easy instsallati AIR CURTAINAppliance:-commercial usag: general store,supermarket,department store,the entrence ... underground store,underground parking lot,shoping mall,threater,waitingroom etc.-industrial usage: entrance of freezer or refrigenators,factory assembly line,storage ... /900-2S BAC-120/1200-2S BAC-120/1000-2S AIR CURTAIN