... step control) -slim and beautiful designe -CE Certificate. AIR CURTAINAppliance:-commercial usag: general store,supermarket,department store,the entrence ... lot,shoping mall,threater,waitingroom etc.-industrial usage: entrance of freezer or refrigenators,factory assembly line,storage space,and ... automatic driver line,the place of garbage incineration,etc.Modle :BAC-120/900-2S BAC ...