30" X 36" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE Oval to Round 90-Degree Boot + Product Details Size –

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

this cutter ensures smooth

+ Product Details Size - 24"w X 28"h is the size for the duct opening measurement only

+ Product Details Size - 36"w X 28"h X 2"d (for duct opening measurement only)

30" X 36" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE Oval to Round 90-Degree Boot + 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,