16"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 31.75"h] Color_Red Oak Installation is simple

Installation is simple

actual front end outer dimensions are approximately 12 5/8" width X 24 5/8" height

Installation – Easy to Install

Actual Filter Size – 24 3/4"w x 15 3/4" x 1"

16"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 31.75"h] Color_Red Oak Installation is simple+ Product Details Size 16"w X 30"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 17. 75" Width X 31. 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