12" X 25" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 27 5/8"] Round To Oval Straight Boot + Product Details Size –

+ Product Details Size – 12" X 12" is the size for the drywall opening measurement only

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

7/8” - 3397 PSI

Technical Specifications – Voltage: - 100-240V AC 50-60Hz

+ Product Details Size & Compatibility – The size of galvanized sheet metal straight floor boot is 14" X 4" X 7"

12" X 25" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 27 5/8"] Round To Oval Straight Boot + Product Details Size –+ Product Details Size 12"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 14 5 8" width X 26 5 8" height Actual Filter Size 11 3 4"w x 23 3 4" x 1" High quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Location Sidewall and ceiling Design Removable door face for easy filter change & cleaning uses a 1" thick filter. Our filter