T35-11/BT35-11/ FT35-11/FBT35-11 type shaft fan T35-11: shaft fan. BT35-11: explosion-proof shaft fan. FT35-11: corrosion-proof shaft fan. FBT35-11: explosionproof corrosion-proof shaft fan. Features 1. is made of explosion-proof moter, leaves, cylinder and so on. 2. low hoise, low-energy consumption secure explosion-proof protection. 3. main-role rotary(or motor power or wind) can be matched according to the demand of user. 4. suitable for steel cable wiring.