Filter Grille FG-25X12 Finish:Black One piece curved frame with

One piece curved frame with gasket fits flush to spiral pipe

Opposed Blade Damper standard on 4" widths

3 or 4 way patterns * Spring push release for easy access to adjust pattern controllers * Round No Labor Collar sizes: 6-10"

Rust resistant pre-coat with durable powder finish

Filter Grille FG-25X12 Finish:Black One piece curved frame 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