20" X 12" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Round Duct Pipe so it won’t rust or

so it won’t rust or degrade in humid conditions

actual front end outer dimensions are approximately 31

+ Product Details Size - 34"w X 36"h X 2"d (for duct opening measurement only)

Ideal for plumbers

+ Product Details Size – Duct end cap is 8" X 4" | 26-gauge galvanized steel end cap

20" X 12" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Round Duct Pipe so it won’t rust or+ Product Details Size 20"w X 12"h is the size for the duct opening measurement only, [Outer Dimensions: 22. 5"w X 14. 5"h] Actual Filter Size 19 3 4"w x 11 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,