20" X 36" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES R-6.0 insulation protecting it from outside elements

protecting it from outside elements

+ Product Details Size - 6"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 16 5/8" width X 10 5/8" height

[Outer Dimensions: 14

it provides a seamless solution for noise control

20" X 36" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES R-6.0 insulation protecting it from outside elements+ Product Details Size 20"w X 36"h is the size for the duct opening measurement only, [Outer Dimensions: 22. 5"w X 38. 5"h] Actual Filter Size 19 3 4"w x 35 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,