16" X 24" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Compatible with Duct 3" this robust access door ensures

this robust access door ensures security with its tumbler lock mechanism

+ Product Details Size & Compatibility – The size of the side round ceiling box is 12" X 12" X 4" and it is compatible with duct 4"

Enjoy protection

display === '') { content

16" X 24" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Compatible with Duct 3" this robust access door ensures+ Product Details Size 16"w X 24"h is the size for the duct opening measurement only, [Outer Dimensions: 18. 5"w X 26. 5"h] Actual Filter Size 15 3 4"w x 23 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,