12"w X 12"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 13.75"w x 13.75"h] w25h25 + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 32" x 36" Or 36" x 32" duct opening (measured at the opening)

Incorporated with Integral Butterfly Damper for full Airflow Control

actual front end outer dimensions are approximately 18 5/8" width X 32 5/8" height

+ Product Details Size – 28"w X 22"h is the size for the duct opening measurement only

7/8” - 3397 PSI

12"w X 12"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 13.75"w x 13.75"h] w25h25 + Product Details Perfect Fit+ Product Details Size 12"w X 12"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 13. 75" Width X 13. 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