10"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 31.75"h] White actual front end outer dimensions RG1620AL Quality Packaging carefully packaged 8 Feet Long

actual front end outer dimensions are approximately 18 5/8" width X 32 5/8" height

+ Product Details Size - 10"w X 34"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 18" OR 18" x 30" duct opening (measured at the opening)

adds a touch of sophistication to any room

10"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 11.75"w x 31.75"h] White actual front end outer dimensions RG1620AL Quality Packaging carefully packaged 8 Feet Long actual front end outer dimensions are approximately 18 5 8" width X 32 5 8" height + Product Details Size 10"w X 34"h is the size for the duct opening measurement only