Buildings usually exhaust a lot of air which must be replaced or negative air pressure can occur. This is when air uncontrolably rushes into a building to replace the exhausted air. This causes drafts at the floor level, back drafts in chimneys, cold spots, wind chills, inefficient exhaust fan operation, and air to rush in when a door is opened. Negative air pressure conditions can be eliminated with a proper sized make up air fan.
- Housing constructed of G90 galvanized steel
- 10'' 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