26" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 28 5/8" X 26 5/8"] Fixed Blades with Damper + Product Details Size –

+ Product Details Size – 8" x 14" or 14" x 8" is the size for the duct opening measurement only

+ Product Details Size – 24"w X 20"h is the size for the duct opening measurement only

Complies with industry standards of USA: ASTM D-882

+ Product Details Size – 8"w X 28"h is the size for the duct opening measurement only

26" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 28 5/8" X 26 5/8"] Fixed Blades with Damper + Product Details Size –+ Product Details Size 26"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 28 5 8" width X 26 5 8" height Actual Filter Size 25 3 4"w x 23 3 4" x 1" High quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Design Removable door face for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on