30"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 17.75"h] Fixed Blades + Product Details Size – CRFG2028 Width_14in 4 X 12 Is

+ Product Details Size – 16"w X 14"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 36 5/8" width X 34 5/8" height

Say goodbye to vibrating louvers - this grille ensures a quiet

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 26" OR 26" x 24" duct opening (measured at the opening)

Powder-Coat Finish – Never rust

30"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 31.75"w x 17.75"h] Fixed Blades + Product Details Size – CRFG2028 Width_14in 4 X 12 Is + Product Details Size – 16"w X 14"h is the size for the duct opening measurement only actual front end outer dimensions are approximately 36 5 8" width X 34 5 8" height