14" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 16 5/8" X 20 5/8"] Black Pre-flared ends with nuts are

Pre-flared ends with nuts are for simple and easy installation

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Actual Filter Size – 19 3/4"w x 27 3/4" x 1"

Actual Filter Size – 29 3/4"w x 13 3/4" x 1"

14" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 16 5/8" X 20 5/8"] Black Pre-flared ends with nuts are+ Product Details Size 14"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 16 5 8" width X 20 5 8" height Actual Filter Size 13 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.