16" X 24" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES 4" Diameter But they are also the

But they are also the most visible representation of you air system

Actual Filter Size – 13 3/4"w x 19 3/4" x 1"

Perfect for use in living rooms

+ Product Details Perfect Fit & Easy Sizing - Designed for a 34" x 28" Or 28" x 34" duct opening (measured at the opening)

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

16" X 24" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES 4" Diameter But they are also the+ Product Details Size 16"w X 24"h is the size for the duct opening measurement only, [Outer Dimensions: 18. 5"w X 26. 5"h] Actual Filter Size 15 3 4"w x 23 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,