Originally Posted By: Kira
Hello, I do believe it's called a "booster fan". Look 'em up on Dayton's or Grainger's site to confirm. If you come up dry, make a representative sketch and ask a HVAC guy. I'd list the overall dimensions, the inlet and outlet sizes and the HP rating. There's no name or model number on it? Kira
X2, that's an HVAC booster fan.