28"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 11.75"h] w12h12 display: inline-flex Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

display: inline-flex

+ Product Details Size - 28"w X 26"h is the size for the duct opening measurement only

+ Product Details Size – 22" x 26" or 26" x 22" is the size for the duct opening measurement only

Vertical blades in the back

+ Product Details Size – 18"w X 25"h is the size for the duct opening measurement only

28"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 29.75"w x 11.75"h] w12h12 display: inline flex Compatible With Duct 7in Applications This sheet metal DDAG A 1212 display: inline flex + Product Details Size 28"w X 26"h is the size for the duct opening measurement only