18" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades providing a stylish and practical 4 X 12 Is CRFG2028 Width_14in

providing a stylish and practical solution for ventilation

+ Product Details Size - 34"w X 10"h is the size for the duct opening measurement only

+ Product Details Size - 36"w X 14"h is the size for the duct opening measurement only

+ Product Details Size – 12"w X 24"h is the size for the duct opening measurement only

+ Product Description Upgrade your HVAC system with our 5" Round Air Vent Supply Grille

18" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades providing a stylish and practical 4 X 12 Is CRFG2028 Width_14in providing a stylish and practical solution for ventilation + Product Details Size 34"w X 10"h is the size for the duct opening measurement only