10"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 7.75"h] Grille Actual Filter Size – 25

Actual Filter Size – 25 3/4"w x 5 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 36" or 36" x 12" duct opening (measured at the opening)

actual front end outer dimensions are approximately 36 5/8" width X 12 5/8" height

+ Product Details Size – 22"w X 28"h is the size for the duct opening measurement only

HVAC Premium has been providing superior quality service for many years

10"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 7.75"h] Grille Actual Filter Size – 25+ Product Details Size 10"w X 6"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 11. 75" Width X 7. 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 wear