10"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 9.75"h] Curved Blade Steel actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

actual front end outer dimensions are approximately 26 5/8" width X 8 5/8" height -

+ Product Details Size - 26"w X 10"h is the size for the duct opening measurement only

strong aluminum construction with smooth finished edges for easy and safe use

+ Product Details Perfect Fit & Easy Sizing - Designed for a 36" x 6" OR 6" x 36" duct opening (measured at the opening)

75" width X 23

10"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 11.75"w x 9.75"h] Curved Blade Steel actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG A 1212 actual front end outer dimensions are approximately 26 5 8" width X 8 5 8" height + Product Details Size 26"w X 10"h is the size for the duct opening measurement only