18"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 19.75"w x 19.75"h] w34h34 actual front end outer dimensions

actual front end outer dimensions are approximately 24 5/8" width X 24 5/8" height

+ Product Details Size – 20"w X 4"h is the size for the duct opening measurement only

Design – 180 degrees double direction adjustable - fins are manually adjustable individually for optimal air distribution

much more than required 700 PSI for R410

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 32" or 32" x 10" duct opening (measured at the opening)

18"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 19.75"w x 19.75"h] w34h34 actual front end outer dimensions+ Product Details Size 18"w X 18"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 19. 75" Width X 19. 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