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Use for applications with round ductwork to create a clean and easy to install finish for your round registers or diffusers
904 - Double Deflection Adjustable Aluminum Blade Grille For a 40" x 18" Duct Opening (front blades parallel to shortest dimension)
Heavy Duty ConstructionMRI CompatibleInsect Screen
Powder coat finish
Perforated Face Grille
Fixed Bar Blade Filter Grille 935FG-40X20 Finish:Black Use for applications with roundStandard Features * 45 degree fixed blades parallel to the longest dimension * Hand operated lever for easy filter access * Holds up to 2" thick standard filter (not included) * Removable face for easy cleaning and maintenance * Filter door hinges parallel to longest side * 4 way reversible door on square sizes * 2 way reversible door on rectangular sizes * Filter retention tabs * Concealed mounting holes * Soft White Options * SP935FG 4 holds 4" deep
