25" X 14" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE 4in diameter Actual Filter Size – 13

Actual Filter Size – 13 3/4"w x 19 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 36" OR 36" x 24" duct opening (measured at the opening)

actual front end outer dimensions are approximately 25" width X 25" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 26" x 10" OR 10" x 26" duct opening (measured at the opening)

this flex duct decreases the pressure loss and provides a more hygienic environment

25" X 14" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE 4in diameter Actual Filter Size – 13+ Product Details Size 25"w X 14"h is the size for the duct opening measurement only, [Outer Dimensions: 27. 5"w X 16. 5"h] Actual Filter Size 24 3 4"w x 13 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,