8"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 9.75"w x 7.75"h] Color_Red Oak + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 20" OR 20" X 14" duct opening (measured at the opening)

With Insect Net That Will Prevent Mousquitos and Insects From Entering

+ Product Details Size - 14"w X 14"h X 2"d (for duct opening measurement only)

+ Product Details Size - 28"w X 26"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 30 5/8" width X 14 5/8" height

8"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 9.75"w x 7.75"h] Color_Red Oak + Product Details Perfect Fit+ Product Details Size 8"w X 6"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 9. 75" Width X 7. 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 wear