btw in the old furnace the fan box was around 24X24X36. wouldn't have a prob building a box that size.
swisha Reviewed by swisha on . squirrel cage fans anyone here currently using a squirrel cage fan as a exhaust fan? yea i know a inline fan is much better, but in my case the fan is free. i recently installed a new furnace and looking at the old unit i noted a fairly new squirrel cage fan in there so i ripped it out for use another day. not sure the cfm's but i do know it was a 125,000btu furnace, and a nice sized fan about 18in tall and atleast 12in wide. fan also has a hi/lo feature. fired that sucker up and it does move some air. Rating: 5