Water Heating Type Cold & Warm Protect Air Door/Air CurtainAttach:1).AIR CURTAIN( Air Door , Air Ventilation , Ventilation Door , Curtain Door , Air conditioning Protector , Air heating protectitive Machine , Energy saving filter , ... )are designed for installation in shops, office buildings, hotels , restaurants doorway, and so on.They discharge a curtain of air, which effectively shut out outside air. Use them to keep out insects, unpleasant smells, and dust from indoor where a large number of people pass in and out. These air curtains also prevent air escaping from an air-conditioned room.2).Description:NameAir DoorModel:SM3509, SM3512, SM3515 ;SM3509Y, SM3512Y, SM3515Y.Approvals:CE,GMC, ECVV, CCC, ...Capable:CQC,GS,UL,CB,CSARegion:GuangzhouLuxury Series Air Curtain Description:High efficiency evaporator designed, high quality copper pipe and aluminum foil, high Heat-exchanging efficiency, excellent heat releasing air door3).Others :Payment TermsL/C, T/TMinimum Order20GPLead Time Delivery Time30 daysSample AvailableYesDelivery Detailsusually within 30 days after receiving the deposit.FOB PortHuangpu ; Shenzhen - Shekou, YantianShipmentusually by seaPacking InfoBase on container order(s), usually with plastic bag + foam + outside Sea worthy cartonOEM Service :Available