12"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 27.75"h] Return + Product Details Size –

+ Product Details Size – 10"w X 28"h is the size for the duct opening measurement only

This versatile diffuser is available in 1-way

actual front end outer dimensions are approximately 32 5/8" width X 30 5/8" height

+ Product Description Protect and secure your thermostat with this high-quality Clear Plastic Thermostat Guard

Made from high-quality aluminum

12"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 27.75"h] Return + Product Details Size –+ Product Details Size 12"w X 26"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 13. 75" Width X 27. 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