30"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 19.75"h] Compatible With Duct 10in Design – Rigid gauge built

Design – Rigid gauge built for durability and long life in mind

+ Product Details Size - 14"w X 22"h is the size for the duct opening measurement only

+ Product Details Size – 32"w X 26"h is the size for the duct opening measurement only

this easy-to-install grille fits seamlessly into any standard return filter opening

Actual Filter Size – 7 3/4"w x 5 3/4" x 1"

30"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 19.75"h] Compatible With Duct 10in Design – Rigid gauge built+ Product Details Size 30"w X 18"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 31. 75" Width X 19. 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