22"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 9.75"h] Color_White + Product Details Size -

+ Product Details Size - 4"w X 26"h is the size for the duct opening measurement only

+ Product Spec Sheet Aluminum Return Grille Spec Sheet

+ Product Details Size - 12"w X 6"h X 2"d (for duct opening measurement only)

1/2” - 3119 PSI

High diffusion induction rates result in rapid temperature and velocity equalization of the mixed air mass well above the zone of occupancy

22"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 9.75"h] Color_White + Product Details Size -+ Product Details Size 22"w X 8"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 23. 75" Width X 9. 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 wear