12" X 10" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Ceiling this 45-degree elbow ensures efficient

this 45-degree elbow ensures efficient airflow while maintaining durability and precision

+ Product Details Size - 26"w X 6"h X 2"d (for duct opening measurement only)

1x Variant Socket

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 12" or 12" x 10" duct opening (measured at the opening)

12" X 10" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Ceiling this 45-degree elbow ensures efficient+ Product Details Size 12"w X 10"h is the size for the duct opening measurement only, [Outer Dimensions: 14. 5"w X 12. 5"h] Actual Filter Size 11 3 4"w x 9 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,