36" X 18" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Height_22in 40" x 16" Aluminum Spiral

40" x 16" Aluminum Spiral Duct Air Vent Grille Cover - Fully Adjustable Double Deflection HVAC Air Supply

actual front end outer dimensions are 23

+ Product Details Size - 10"w X 22"h X 2"d (for duct opening measurement only)

Applications – The galvanized steel metal round duct is used to cut into a plenum or rectangular duct to begin a trunk line or branch-like runs

36" X 18" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Height_22in 40" x 16" Aluminum Spiral+ Product Details Size 36"w X 18"h is the size for the duct opening measurement only, [Outer Dimensions: 38. 5"w X 20. 5"h] Actual Filter Size 35 3 4"w x 17 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,