Name: air inlet ventilation window
Model: GF-FC2000,GF-FC2200, GF-FC3400
Application:  
An essential part of ventilation system, be installed in ceiling of poultry and swine house.
Controlling the air quantity  into house indoor ,keeping the air flowing clean and fresh
Features :
1) Material ABS engineering  plastic by injection molding, high  density and more firmly
2) Double insulation  ,good heat preservation. Main door molded in 2 pieces preventing deformation.
3) UV- resistant and long useful life
4) The linking spring and accessory are stainless steel and durable
5) Open the window Any Angle, by pulling winch and left-right pulley manually and automatically.