12" X 34" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 36 5/8"] w25h25 function toggleAccordion(event) { event

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Actual Filter Size – 29 3/4"w x 13 3/4" x 1"

3 * insulation density is 30kgs/cbm = 0

+ Product Details Size - 8"w X 14"h is the size for the duct opening measurement only

5" width x 13

12" X 34" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 14 5/8" X 36 5/8"] w25h25 function toggleAccordion(event) { event+ Product Details Size 12"w X 34"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 14 5 8" width X 36 5 8" height Actual Filter Size 11 3 4"w x 33 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