25" X 25" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES steel + Product Details Size -

+ Product Details Size - 44"W X 4"H is (for duct opening measurement only)

+ Product Details 18"w X 18"h is the size for the drywall opening measurement only

actual front end outer dimensions are approximately 34 5/8" width X 10 5/8" height

6"w X 6"h Is The Size For The Duct Opening Measurement Only

25" X 25" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES steel + Product Details Size -+ Product Details Size 25"w X 25"h is the size for the duct opening measurement only, [Outer Dimensions: 27. 5"w X 22. 5"h] Actual Filter Size 24 3 4"w x 24 3 4" x 1" High Quality High quality rust free, strong aluminum construction with smooth finished edges for easy and safe use; Filter grille features a user friendly plastic latch that requires no screwdriver for opening. Installation Location Sidewall and ceiling. Design Heavier gauge than needed,