10" X 10" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES w16h16 + Product Details Size -

+ Product Details Size - 36"w X 4"h is the size for the duct opening measurement only

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providing superior air distribution throughout your space

Insulation – A thick blanket of fiberglass insulation provides you with an R-Value of 8

10" X 10" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES w16h16 + Product Details Size -+ Product Details Size 10"w X 10"h is the size for the duct opening measurement only, [Outer Dimensions: 12. 5"w X 12. 5"h] Actual Filter Size 9 3 4"w x 9 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,