22"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 29.75"h] Compatible with Duct 6" actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

actual front end outer dimensions are approximately 20 5/8" width X 22 5/8" height

sized to fit into all drop ceiling system

+ Product Details Perfect Fit & Easy Sizing - Designed for a 34" x 30" Or 30" x 34" duct opening (measured at the opening)

Installation Location – Wall or door mount - door thickness up to 32mm - anodised finish - smooth & beautiful

powder-coated steel

22"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 23.75"w x 29.75"h] Compatible with Duct 6" actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are approximately 20 5 8" width X 22 5 8" height sized to fit into all drop ceiling system