12"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 19.75"h] White Upgrade your HVAC system with

Upgrade your HVAC system with our cutting-edge 360-degree airflow grill

Control Your Airflow on drop ceiling grilles

this thermostat guard is compatible with most standard thermostat models

+ Product Details Size - 8"w X 20"h is the size for the duct opening measurement only

+ Product Details Size - 14"w X 20"h is the size for the duct opening measurement only

12"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 19.75"h] White Upgrade your HVAC system with+ Product Details Size 12"w X 18"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 13. 75" Width X 19. 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