36" X 16" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE w8h8 + Product Details 12" x

+ Product Details 12" x 24" x 1" replacement air filters for your furnace

+ Product Details Size - 16"w X 16"h Is The Size For The Duct Opening Only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 34" OR 34" x 20" duct opening (measured at the opening)

actual front end outer dimensions are approximately 18 5/8" width X 24 5/8" height

36" X 16" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE w8h8 + Product Details 12" x+ Product Details Size 36"w X 16"h is the size for the duct opening measurement only, [Outer Dimensions: 38. 5"w X 18. 5"h] Actual Filter Size 35 3 4"w x 15 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,