Tjernlund Duct Booster Increases Heating and Cooling Power — 275 CFM
Increases heated or cooled air flow to problem rooms up to 50%! Squirrel-cage style Duct BoosterĘ installs in ducts 5in. in diameter or more and in rectangular ducts at least 3 1/4in. deep. Dependable 40 Watt Fasco motor moves 275 CFM free air, draws .51 Amps. UL listed.
