16"w X 12"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 13.75"h] 1-Way actual front end outer dimensions RG2230 HP w4h4 const modal document

actual front end outer dimensions are approximately 34 5/8" width X 32 5/8" height

+ Product Details Size - 34"w X 16"h is the size for the duct opening measurement only

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

+ Product Details Size - 30"w X 2"h is the size for the duct opening measurement only

+ Product Details Size - 18"w X 30"h is the size for the duct opening measurement only

16"w X 12"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 17.75"w x 13.75"h] 1 Way actual front end outer dimensions RG2230 HP w4h4 const modal document actual front end outer dimensions are approximately 34 5 8" width X 32 5 8" height + Product Details Size 34"w X 16"h is the size for the duct opening measurement only