12" X 10" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Round To Oval Straight Boot 5" - SEE BELOW IN

5" - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLE

This 12" X 8" end cap is constructed with 26-gauge galvanized steel

Actual Filter Size – 25 3/4"w x 21 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 18" OR 18" X 16" duct opening (measured at the opening)

Versatile and reliable

12" X 10" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Round To Oval Straight Boot 5" - SEE BELOW IN+ 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,