16" X 25" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES 12" Round Duct Pipe 25" X 5" galvanized floor

25" X 5" galvanized floor boot end center 26-gauge

actual front end outer dimensions are approximately 28 5/8" width X 28 5/8" height

+ Product Details Size - 18"w X 32"h is the size for the duct opening measurement only

+ Product Details Size - 26"w X 30"h is the size for the duct opening measurement only

16" X 25" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES 12" Round Duct Pipe 25" X 5" galvanized floor+ Product Details Size 16"w X 25"h is the size for the duct opening measurement only, [Outer Dimensions: 18. 5"w X 27. 5"h] Actual Filter Size 15 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,