1) Easy to open, convenient design without screws outside;2) Aluminum and ABS stainless cover;3) Remote control;4) Two speeds;5) Centrifugal type air flow;6) Applications: 2.5-3.5m doors;7) Available size: 900mm, 1,000mm, 1,200mm, 1,500mm, 1,800mm, 2,000mm.