About the 9" x 9" Perforated Curved Blade Surface Mount Diffuser w/ Adjustable Blades, 4-Way, White - Shoemaker 500CB40-9X9
Shop now for a bargain on the 9" x 9" Perforated Curved Blade Surface Mount Diffuser with Adjustable Blades, 4-Way in soft white (Shoemaker 500CB40-9X9) here at PlumbersStock.com. One great feature is that the nylon bushing reduce noise from rattling. The 3/16" perforated holes are staggered with 1/4" centers. Please be aware that ceiling opening must be 4” larger in length and width than the nominal duct size. Shoemaker is a trusted HVAC brand known for quality manufacturing.