12" X 30" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Oval Stack Head 9% Pure Copper meeting ASTM

9% Pure Copper meeting ASTM B280 standards

SAVE MONEY ON YOUR BILL - PRESERVE YOUR HVAC UNIT - Highest Rate Of Air Flow Efficiency - Easy Unrestricted Air Flow For Your HVAC System - 1/2" x 1/2" x 1/2" Cube Core - Offers 90% Free Area

+ Product Details Size – 25"w X 32"h is the size for the duct opening measurement only

+ Product Details Size - 25"w X 24"h is the size for the duct opening measurement only

+ Product Details Size – 18"w X 22"h is the size for the duct opening measurement only

12" X 30" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Oval Stack Head 9% Pure Copper meeting ASTM+ Product Details Size 12"w X 30"h is the size for the duct opening measurement only, [Outer Dimensions: 14. 5"w X 32. 5"h] Actual Filter Size 11 3 4"w x 29 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,