VEVOR 40 Inch Air Curtain, 2 Speeds 1490/1667 CFM Commercial Indoor Air Curtain, Air Curtains for Doors with 2 Limited Switches, 110V Unheated

24" Super Power Industrial Air Curtain 1667cfm 2 Speeds W/2 Limit Switch 1/2hp Air Isolation 2 Adjustable Speeds Large Air Flow Low Noise Energy-Saving Design Easy To Install Power Cord Length: 59"+71" (1.5+1.8m),Air Flow: 1490/1667 CFM,Noise: <60 dB,Input Power: 260-353 W,Wind Speed: 10-11m/s,Voltage:110V/60HZ,Product Dimensions: 39.4"x10.2"x10.6" (1000x260x270mm),Net Weight: 34 lbs (15.5 kg),Suitable Door Height: 137.8" (3.5m)