Many buildings with no make up fan or an undersized one experience indoor environmental problems, negative air pressure being the main one. This is when air rushes in uncontrollably to fill in for the exhausted air. Negative air pressure produces drafts, backdrafts, cold spots, wind chills, and inefficient exhaust fan operation. This can be counteracted by a proper sized make up air fan.
- 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