28" X 32" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 34 5/8"] Return actual front end outer dimensions

actual front end outer dimensions are approximately 24 5/8" width X 20 5/8" height

built for durability and long life in mind

Premium Airflow Efficiency - High-performance cube core eggcrate design allows 95% airflow efficiency

actual front end outer dimensions are approximately 18 5/8" width X 26 5/8" height -

28" X 32" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 34 5/8"] Return actual front end outer dimensions+ Product Details Size 28"w X 32"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 30 5 8" width X 34 5 8" height Actual Filter Size 27 3 4"w x 31 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.