Tjernlund Products says its Duct Booster line is ideal for combating airflow problems in spaces that are hard to heat or cool. The Duct Booster fans were made to install easily and operate quietly. Models are made for use in metal or flexible ductwork, and optional accessories allow for automated operation and fan speed control. 

Tjernlund Products

(800) 255-4208

www.tjernlund.com