Filter Grille FG-18X20 Filter Space:For 4" Deep Filter T-Bar Modular Core Diffuser with

T-Bar Modular Core Diffuser with Round Collar 18-20

Modern step-down design with 4-way air diffusion

Standard Features * Cones are one-piece stamped construction providing a clean

1/2" spacing dual angular louvers

Filter Grille FG-18X20 Filter Space:For 4" Deep Filter T-Bar Modular Core Diffuser withStandard Features 1 2" spacing dual angular louvers for strength and maximum free area Stamped steel face with roll formed frame Hinged removable face with hinges parallel to longest side Hand operated lever for easy filter access and cleaning 4 way reversible door on square sizes 2 way reversible door on rectangular sizes Concealed mounting holes with mounting screws Holds up to a 1" filter (not included) with filter retention tabs (FG1) Rust