Wider border for easy installation. Face hinged fro easy opening. Stamped steel construction with 1/2" face bar spacing. Uses standard filter (not included). Large free area approximately 72%.
AmeriFlow registers, grilles and diffusers are designed to fit standard duct openings. For floor applications, measure both the width and length of the existing duct opening. An opening of 4"x10" requires a 4x10 register. When ordering sidewall/baseboard products, specify the horizontal dimension first.