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

+ Product Details Size - The listed 10" diameter refers specifically to the size of the duct opening

actual front end outer dimensions are approximately 26 5/8" width X 18 5/8" height

+ Product Details Size – 24" x 24" with 10" collar T-Bar drop ceiling perforated return grill - metal back casing

+ Product Details Size – 8" x 16" or 16" x 8" is the size for the duct opening measurement only

+ Product Details Size – 25"w X 10"h is the size for the duct opening measurement only

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