HVAC Premium 18"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 19.75"h] w32h32 actual front end outer dimensions

actual front end outer dimensions are approximately 22 5/8" width X 27 5/8" height

Our coils have a a very high PSI burst pressure

+ Product Details Size - 20"w X 8"h is the size for the duct opening measurement only

+ Product Description Upgrade your HVAC system with our 4" Round Air Vent Supply Grille

designed for optimal airflow and efficiency

HVAC Premium 18"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 19.75"h] w32h32 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