Suncourt Flush Fit HC500-W Vent Cover with Fan Booster Adapter Plate, Energy Efficient AC Register Booster, Improved Air Flow for Better Indoor Heating and Cooling, White
Used with Suncourt Flush Fit Register Booster. Adapts booster fan to larger registers.Plate dimensions - 8" H X 13-3/4" W Fits Wall/Floor Register Sizes:€ 6" x 10"€ 6" x 12"€ 4" x 12"