30" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES 18" Diameter R Value Rating of Insulation

R Value Rating of Insulation - R3

which the interior PET provides

Elevate comfort while saving on bills with HVAC Premium's Aluminum Adjustable Return Grill

+ Product Details Size - 18"w X 4"h is the size for the duct opening measurement only

This thoughtful design ensures optimal air circulation for your HVAC system

30" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES 18" Diameter R Value Rating of Insulation+ Product Details Size 30"w X 20"h is the size for the duct opening measurement only, [Outer Dimensions: 32. 5"w X 22. 5"h] Actual Filter Size 29 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,