36" x 25" Steel Return Air Filter Grill for 1" Filter Removable Face/Door 5" Diameter + Product Details Size -

+ Product Details Size - 14"w X 8"h Is The Size For The Duct Opening Measurement Only

+ Product Details Size – 12"w X 8"h is the size for the duct opening measurement only

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+ Product Description Introducing our 4" x 18" or 18" x 4" Floor Grille - a reliable and durable air grill designed for exceptional performance and built to last

36" x 25" Steel Return Air Filter Grill for 1" Filter Removable Face/Door 5" Diameter + Product Details Size -+ Product Details Size 36"w X 25"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 38 5 8" width X 27 5 8" height Actual Filter Size 35 3 4"w x 24 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.