36" X 18" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES Custom Louvers our Circular Air Supply Valves Suitable for all AC 8in diameter 12125SDCLNGBX

our Circular Air Supply Valves are ideal for low and medium pressure ventilation air conditioning systems

Rustproof and built to last in moisture-prone environments

+ Product Details Size - 28"w X 20"h X 2"d (for duct opening measurement only)

+ Product Details Size - 25"w X 8"h is the size for the duct opening measurement only

36" X 18" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER EASY AIRFLOW LINEAR BAR GRILLES Custom Louvers our Circular Air Supply Valves Suitable for all AC 8in diameter 12125SDCLNGBX our Circular Air Supply Valves are ideal for low and medium pressure ventilation air conditioning systems Rustproof and built to last in moisture prone environments