22"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 17.75"h] Adjustable Return + Product Details Size -

+ Product Details Size - 10" X 10" is the size for the duct opening measurement only

Cubic core eggcrate design has the highest rate of airflow efficiency

These are airflow control components made to connect to supply grilles of the drop ceiling

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 36" OR 36" x 24" duct opening (measured at the opening)

this thermostat guard is an ideal solution for residential

22"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 17.75"h] Adjustable Return + Product Details Size -+ Product Details Size 22"w X 16"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 23. 75" Width X 17. 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