For 6100 and 6400 series diffusers. Sizes 6",8",10" lined with insulation. Unit mounts easily to 6100 or 6400 series diffusers via pre-punched mounting holes in plenum and 4 bayonet clips supplied with collar. Galvanized steel construction.
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.