12"W X 4"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 13.875"W X 5.875"H] 3-Way or 4-Way Refrigerant - 1/2" White Insulation

Refrigerant - 1/2" White Insulation - 50' Long

Actual Filter Size – 13 3/4"w x 24 3/4" x 1"

+ Product Details Size - 3" Diameter is the size for the duct opening measurement only

Design – Circular air supply valves - designed to be used in low and medium pressure ventilation air conditioning systems

12"W X 4"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 13.875"W X 5.875"H] 3-Way or 4-Way Refrigerant - 1/2" White Insulation+ Product Details Size 12"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 875" width X 5. 875" height. High Quality High quality aluminum with counter sunk screw holes (screws included) and no sharp edges. Design Unrestricted airflow For Your HVAC system noise free components no vibrating louvers etc. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was