16" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 18 5/8" X 18 5/8"] 8in diameter + Product Details Size -

+ Product Details Size - 36"w X 14"h is the size for the duct opening measurement only

Carefully Shrink Wrapped With Cardboard Backing To Prevent Damage In Shipment

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Copper coil line set fits most ductless mini split air conditioners

16" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 18 5/8" X 18 5/8"] 8in diameter + Product Details Size -+ Product Details Size 16"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 18 5 8" width X 18 5 8" height Actual Filter Size 15 3 4"w x 15 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.