12"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 31.75"h] Copper Coil-Insulated Line Set actual front end outer dimensions

actual front end outer dimensions are approximately 11

+ Product Details Size – 26"w X 34"h is the size for the duct opening measurement only

Actual Filter Size – 21 3/4"w x 25 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 22" x 14" OR 14" x 22" duct opening (measured at the opening)

these heavy-duty louvers are ideal for use in attics

12"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 31.75"h] Copper Coil-Insulated Line Set actual front end outer dimensions+ Product Details Size 12"w X 30"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 13. 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