18"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 35.75"h] Compatible With Duct 6in actual front end outer dimensions

actual front end outer dimensions are approximately 14 5/8" width X 20 5/8" height

+ Product Details Size - 34"w X 24"h is the size for the duct opening measurement only

Actual Front End Outer Dimensions Are 14" Width X 5" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

from 4" to 20"

crafted from heavy gauge steel for unparalleled durability

18"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 35.75"h] Compatible With Duct 6in actual front end outer dimensions+ Product Details Size 18"w X 34"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 19. 75" Width X 35. 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