28"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 35.75"h] 1-Way + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 24" OR 24" X 16" duct opening (measured at the opening)

much more than the required 700 psi for r410

+ Product Details Size - 20"w X 12"h is the size for the duct opening measurement only

+ Product Details Size - 36"w X 20"h X 2"d (for duct opening measurement only)

Design – Removable face for cleaning and access to damper - wooden damper for airflow shutoff control

28"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 35.75"h] 1-Way + Product Details Perfect Fit+ Product Details Size 28"w X 34"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 29. 75" Width X 35. 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