32"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 33.75"w x 29.75"h] 12" Diameter + Product Details Size –

+ Product Details Size – 16" x 18" or 18" x 16" is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 16" OR 16" x 30" duct opening (measured at the opening)

1-1/8" - 2334 PSI

75" width X 7

+ Product Details Size – 32"w X 14"h is the size for the duct opening measurement only

32"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 33.75"w x 29.75"h] 12" Diameter + Product Details Size –+ Product Details Size 32"w X 28"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 33. 75" Width X 29. 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