30" X 36" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE Return + Product Details Size –

+ Product Details Size – Stick-on collar is 12" and it is compatible with duct 12"

Ideal for plumbers

Ideal for Walls & Ceilings: Designed for seamless installation in standard 16" X 6" duct openings

+ Product Details Size – 32"w X 8"h is the size for the duct opening measurement only

+ Product Details Size - 22"w X 20"h is the size for the duct opening measurement only

30" X 36" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE Return + Product Details Size –+ Product Details Size 30"w X 36"h is the size for the duct opening measurement only, [Outer Dimensions: 32. 5"w X 38. 5"h] Actual Filter Size 29 3 4"w x 35 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,