25" X 14" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE Compatible with Duct 8" this blank box is the

this blank box is the perfect solution for new constructions or system upgrades

This ensures superior performance and efficiency in any application

actual front end outer dimensions are approximately 20 5/8" width X 16 5/8" height

+ Product Details Size – 8"w X 28"h is the size for the duct opening measurement only

Premium Quality – Our duct stick-on collar with damper has made of high-quality galvanized steel metal for durability and rust prevention

25" X 14" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLE Compatible with Duct 8" this blank box is the+ 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,