20" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Ceiling Designed for optimal air flow

Designed for optimal air flow and lasting durability

The operable dampers

actual front end outer dimensions are 13

actual front end outer dimensions are approximately 5

+ Product Details Size - 14"w X 16"h is the size for the duct opening measurement only

20" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Ceiling Designed for optimal air flow+ Product Details Size 20"w X 20"h is the size for the duct opening measurement only, [Outer Dimensions: 22. 5"w X 22. 5"h] Actual Filter Size 19 3 4"w x 19 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,