22"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 15.75"h] Return + Product Details Size - CRFG2028 Width_14in 4 X 12 Is

+ Product Details Size - 28"w X 16"h is the size for the duct opening measurement only

+ Product Details Size - 18"w X 14"h is the size for the duct opening measurement only

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

With our extensive selection of Grilles

this flex duct decreases the pressure loss and provides a more hygienic environment

22"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 23.75"w x 15.75"h] Return + Product Details Size CRFG2028 Width_14in 4 X 12 Is + Product Details Size 28"w X 16"h is the size for the duct opening measurement only + Product Details Size 18"w X 14"h is the size for the duct opening measurement only