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

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

visible to your family members and house guests

+ Product Details Includes 28 Rods

} + Product Details Size & Compatibility - The size of a boot register end is 12" X 2

This feature makes it an ideal replacement access door

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.