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

+ Product Details Size – 12"w X 8"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 16 5/8" width X 10 5/8" height -

but you will appreciate the benefits over the period of time

+ Product Details Size – 6" x 12" or 12" x 6" is the size for the duct opening measurement only

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26" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 28 5/8" X 26 5/8"] Grilles + 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