36" X 14" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Ceiling PROTECTION - Provides the ultimate

PROTECTION - Provides the ultimate defense against any kind of weather

+ Product Details Perfect Fit & Easy Sizing - Designed for a 26" x 28" OR 28" x 26" duct opening (measured at the opening)

The grille face easily clips into place with the included metal clips

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 30" OR 30" x 18" duct opening (measured at the opening)

36" X 14" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Ceiling PROTECTION - Provides the ultimate+ 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,