... with 3D body design; Luxury alum. air intake; Normal air, offer invisiable air door. Newly design air curtain:Aluminum cover with 3D body design, covered ... body.Optimized fan wheel design, provide stable and even air curtain. With large air volume and low noise.Reliable designed motor operates 5000 ... ) Available size: 900mm, 1,200mm, 1,500mm, 1,800mm 5G Series Air Curtain