18" X 6" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 20 5/8" X 8 5/8"] flat stamped steel Upgrade today for better performance

Upgrade today for better performance and cleaner air

Actual Filter Size – 15 3/4"w x 7 3/4" x 1"

including Ductless Mini-Split

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This simple adjustment reduces HVAC strain

18" X 6" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 20 5/8" X 8 5/8"] flat stamped steel Upgrade today for better performance+ Product Details Size 18"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 20 5 8" width X 8 5 8" height Actual Filter Size 17 3 4"w x 5 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. Our