Tjernlund In-Line Centrifugal Fan Duct Booster 115V # DB-2

8.00 LBS
Calculated at Checkout


  • 1/70 hp, .51 amps 115 Volts 60hz.
  • Motor RPM 1500
  • Sleeve bearings
  • Free Air CFM 275
  • CFM @ 25' = 150 CFM, 50" = 100 CFM, 75" = 95 CFM
  • Housing Length 7"
  • 200 degrees F = Max inlet temp
  • UL Listed
  • 1 Year Manufacture Warranty

Booster fits in round, square, or flat ducts as shallow as 3-1/4" deep. One 4" x 7" cutout is required. Unit attaches to ductwork with 4 sheet metal screws. Steel housing and wheel. The permanently lubricated motor is positioned out of the air stream. Motor shaft should remain horizontal to the floor; mount on bottom of horizontal or side of vertical duct. Not for use with combustion exhaust.
Unit may be actuated by Pressure Switch No. PS1503, sold separately.
The DB-2 can be installed in round ducts up to 8", rectangular ducts as shallow as 3 1/4"
Note: The cfm rating is for 8" dia. pipe. Air flow will decrease slightly with smaller pipe.

Optional Tjernlund Duct Airstat Pressure Switch PS1503