Tjernlund

Tjernlund Duct Booster 4 in. x 12 in. Steel Register Booster Fan, White with Silent Blower

Tjernlunds Duct Booster Register Booster Fans increase air flow to rooms that are too hot or too cold. These all metal high velocity register fans increase weak air flow from registers quickly and easily. Blower wheel is screened to protect small fingers and block debris.