24"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 31.75"h] Copper Coil + Product Details Size –

+ Product Details Size – 26"w X 20"h is the size for the duct opening measurement only

10"w X 6"h Is The Size For The Duct Opening Measurement Only

+ Product Description Introducing the 3-coned supply grille for a T-bar lay-in

+ Product Details Size - 16"w X 14"h is the size for the duct opening measurement only

actual front end outer dimensions are 15

24"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 31.75"h] Copper Coil + Product Details Size –+ Product Details Size 24"w X 30"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 25. 75" Width X 31. 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