Suncourt Flush Fit 132 Cfm 11-5/8 In. X 5-5/8 In. Register Air Booster Fan

Suncourt Flush Fit Register Booster quietly boosts heated or cooled air automatically to improve circulation and comfort. Our new improved "Smart Technology" works automatically with forced air systems without requiring a seasonal adjustment. It has 5 fan speeds with dual fans to pull extra air out of weak registers, boosting airflow up to 85%. It is a simple, energy efficient, and safe solution for rooms that are too hot or too cold. Fits a standard 4" X 10" register. Can be installed in floor or wall registers. (wall registers require optional wall kit) Assembled in the USA. 12 month limited warranty.