... aluminum cover; CE, ROHS, UL certificate. High quality new air curtain Specifications: 1) Remote control or Manual switch2) Two speeds3) ... ,800mm, 2,000mm7) 5000 hours operation without default.Theodoor Air curtain is installed above the entryway of store, restaurant, office, ... environment and save energy of refrigeration equipment.In addition, Air Curtain can prevent the invasion of dust, pest and ...