When exhaust fans remove smoke fumes and contaminated air from a building, there is a negative air pressure unless the air is replenished. This negative air pressure causes drafts, back drafts, cold spots, wind chills, inefficient exhaust fan operation, and strong air inrush when a door is opened. A proper sized make up air fan will eliminate negative air pressure by ventilating the building in a controlled manner.
- Housing constructed of G90 galvanized steel
- 12'' blower, efficient motor, pulleys and belt
- Lid is removable with spring loaded lid latches for full access to internal workings
- System balancing and field adjustment are possible with the variable pitch motor pulley
- Vibration isolation
- Adjustable drive sheaves
- Disconnect switch
- 2'' washable filters