30"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 17.75"h] white + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 36" OR 36" x 24" duct opening (measured at the opening)

Actual Filter Size – 24 3/4"w x 25 3/4" x 1"

actual front end outer dimensions are approximately 10 5/8" width X 16 5/8" height

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

Whether installed on a sidewall or ceiling

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