air curtain: 1.economic style 2.high efficiency and low cost 3.energy saving 4.easy installation and operation Air curtain: water heated air curtain, stem heated air curtain, electric heated air curtain, various types available!Application to shop, supermarket, waiting room, etc public application.water or steam heated air curtain: SizeABCDETypeKM-W-QS-12013101240980900505KM-W-QS- ...