18" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 20 5/8" X 24 5/8"] w14h14 actual front end outer dimensions

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

actual front end outer dimensions are approximately 38 5/8" width X 12 5/8" height -

actual front end outer dimensions are approximately 12 5/8" width X 12 5/8" height

High Quality – Solid rigid steel body for durability and reliability with dampers operable by switch for airflow directional control

18" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 20 5/8" X 24 5/8"] w14h14 actual front end outer dimensions+ Product Details Size 18"w X 22"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 20 5 8" width X 24 5 8" height Actual Filter Size 17 3 4"w x 21 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.