12"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 25.75"h] Compatible With Duct 6in Looks like it was just

Looks like it was just waxed

By simply measuring the width or the length of the vent

+ Product Details Size – 20"w X 18"h is the size for the duct opening measurement only

+ Product Details Size – 34"w X 8"h is the size for the duct opening measurement only

+ Product Details Size – 20"w X 6"h is the size for the duct opening measurement only

12"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 25.75"h] Compatible With Duct 6in Looks like it was just+ Product Details Size 12"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 13. 75" Width X 25. 75" Height Weather and Pest Proof These louvers are especially designed to prevent water from entering your home, and with a built in back 1 2" mesh they also protect you from annoying rodents like mice, rats, birds, and squirrels High Quality Aluminum The premium durable aluminum will never rust and it will never