24" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 26 5/8" X 20 5/8"] 18" Diameter Every grille has a front

Every grille has a front end frame that will overlap at the wall joint

5/8” - 2579 PSI

We carry sizes the big box stores don't

actual front end outer dimensions are approximately 19

High Quality – Rigid aluminum construction with counter-sunk screw holes (screws included) and no sharp edges

24" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 26 5/8" X 20 5/8"] 18" Diameter Every grille has a front+ Product Details Size 24"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 26 5 8" width X 20 5 8" height Actual Filter Size 23 3 4"w x 17 3 4" x 1" High Quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Sidewall and ceiling Design Removable door face for easy filter change & cleaning uses a 1" thick filter.