16"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 33.75"h] Color_Black The 1/2" black insulation

The 1/2" black insulation

+ Product Details Size – 22"w X 36"h is the size for the duct opening measurement only

to Ensure Perfect Smooth Finish

+ Product Details Size - 8"w X 30"h X 2"d (for duct opening measurement only)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 26" OR 26" x 20" duct opening (measured at the opening)

16"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 33.75"h] Color_Black The 1/2" black insulation+ Product Details Size 16"w X 32"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 17. 75" Width X 33. 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