30"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 7.75"h] Material_Anodized Aluminum With a 4" diameter for

With a 4" diameter for the duct opening measurement

actual front end outer dimensions are approximately 18 5/8" width X 12 5/8" height -

Its polished pre-finish gloss varnish not only adds to its appeal but also ensures easy installation

These grilles and registers give you an extra measure of quality that are visible to your family members and house guests

30"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 7.75"h] Material_Anodized Aluminum With a 4" diameter for+ Product Details Size 30"w X 6"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 31. 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