30" X 18" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES 18" Round Duct Pipe Achieve the perfect airflow with

Achieve the perfect airflow with adjustable control by rotating the middle disk

actual front end outer dimensions are approximately 24 5/8" width X 8 5/8" height

+ Product Details Size – 26"w X 24"h is the size for the duct opening measurement only

Actual Filter Size – 33 3/4"w x 13 3/4" x 1"

30" X 18" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES 18" Round Duct Pipe Achieve the perfect airflow with+ Product Details Size 30"w X 18"h is the size for the duct opening measurement only, [Outer Dimensions: 32. 5"w X 20. 5"h] Actual Filter Size 29 3 4"w x 17 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,