<ul><li>Easy-to-install fan is 50% quieter than prop-style fans</li><li>Blower wheel is screened to protect small fingers and block debris</li><li>Plugs into standard 120V outlet</li><li>Includes paintable commercial-grade grill and 6-ft. power cord</li><li>75 CFM, Made in USA.Speed (RPM):1,800</li></ul><br><br>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.

Tjernlund RB12 Register Booster Fan 4 x 12" Brown Grill