1. FRP trumpet-shaped negative pressure fan. The fan exhaust outlet looks like a trumpet shape. Many people call it a trumpet-shaped FRP negative pressure fan.
2. Square FRP negative pressure fan. The fan looks square as a whole, that's why it is called square FRP negative pressure fan. 1. Belt type FRP negative pressure fan: The speed of belt type is 370 - 370. 450 rpm. It uses a six or four pole aluminum shell motor with IP55 protection rating and class F insulation. Low rotation speed products have relatively low noise.
2. Direct Connect Fiberglass Negative Pressure Fan: There are three main types of direct connect motors: 12 pole 440 rpm, 10 pole 560 rpm and 8 pole 720 rpm. is the most used. High speed fanswere noisy. 1. Aluminum alloy blade negative pressure fan: The fan blades are made of aluminum alloy and have 3 or 6 blades.
2. Negative pressure fan with engineering plastic blades: The blades are made of engineering plastic materials, with 6 blades, 7 blades and 9 blades.
3. FRP Blade Negative Pressure Fan: The fan blades are made of FRP material and have 3 or 6 blades.