18"w X 12"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 13.75"h] Color_R-4.2 Yellow Crafted with a solid steel SV2414 HP Product Details Perfect Fit 12" Round Duct Pipe

Crafted with a solid steel body

75" width X 15

Efficient Airflow Design: The slots are meticulously angled to diversify airflow in two directions

+ Product Details Size – 14"w X 32"h is the size for the duct opening measurement only

Installation of the vents will eliminate the need to raise the door ensuring security and constant air flow and reduced heat transfer into attics and adjacent house walls

18"w X 12"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 19.75"w x 13.75"h] Color_R 4.2 Yellow Crafted with a solid steel SV2414 HP Product Details Perfect Fit 12" Round Duct Pipe Crafted with a solid steel body 75" width X 15