10"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 11.75"w x 11.75"h] 14" Diameter Operating from -40°F to +248°F

Operating from -40°F to +248°F

+ Product Details Size – 20" x 26 or 26" x 20" is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 16" or 16" x 8" duct opening (measured at the opening)

Installing the plaster frame is effortless – secure it into your sheetrock

Actual Filter Size – 31 3/4"w x 23 3/4" x 1"

10"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 11.75"w x 11.75"h] 14" Diameter Operating from -40°F to +248°F+ Product Details Size 10"w X 10"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 11. 75" Width X 11. 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