Filter Grille FG-40X20 Filter Space:For 4" Deep Filter For evaporative cooling or high-velocity

For evaporative cooling or high-velocity exhaust applications

Lever operated steel multi-shutter damper

375 Series Submittal

Building materials rated 3 hours or less

Concealed mounting holes

Filter Grille FG-40X20 Filter Space:For 4" Deep Filter For evaporative cooling or high-velocityStandard 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