30"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 15.75"h] Compatible with Duct 8" Actual Filter Size – 23

Actual Filter Size – 23 3/4"w x 23 3/4" x 1"

Actual Filter Size – 33 3/4"w x 13 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 32" x 24" OR 24" x 32" duct opening (measured at the opening)

10" Diameter Is The Size For The Duct Opening Measurement Only

30"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 15.75"h] Compatible with Duct 8" Actual Filter Size – 23+ Product Details Size 30"w X 14"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 31. 75" Width X 15. 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