36" x 25" Steel Return Air Filter Grill for 1" Filter Removable Face/Door 5" Diameter + Product Description Introducing our

+ 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

This feature makes it an ideal replacement access door

+ Product Details Size - 34"w X 18"h X 2"d (for duct opening measurement only)

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

+ Product Details Size - The listed 12" diameter refers specifically to the size of the duct opening

36" x 25" Steel Return Air Filter Grill for 1" Filter Removable Face/Door 5" Diameter + Product Description Introducing our+ 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.