12" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Curved Blade Steel + Product Details Outer dimensions:

+ Product Details Outer dimensions: 17

Premium Quality – Our rectangular duct cap is made of high-quality galvanized sheet metal material (galvanized steel construction for durability and rust prevention)

Most common access door

+ Product Details Size & Compatibility – The 7" galvanized sheet metal straight transitioning duct boot is compatible with duct 7"

this guard fits almost any thermostat and blends seamlessly into any setting

12" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Curved Blade Steel + Product Details Outer dimensions:+ Product Details Size 12"w X 20"h is the size for the duct opening measurement only, [Outer Dimensions: 14. 5"w X 22. 5"h] Actual Filter Size 11 3 4"w x 19 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,