6"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 7.75"w x 35.75"h] White + Product Details Perfect Fit d Product Details Size The 170B 16X16 FBA

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 26" OR 26" X 16" duct opening (measured at the opening)

+ Product Details Size - 36"w X 26"h is the size for the duct opening measurement only

With a solid base for stability

actual front end outer dimensions are approximately 30 5/8" width X 8 5/8" height

Ideal for Walls & Ceilings: Designed for seamless installation in standard 24" X 8" duct openings

6"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 7.75"w x 35.75"h] White + Product Details Perfect Fit d Product Details Size The 170B 16X16 FBA + Product Details Perfect Fit & Easy Sizing Designed for a 16" x 26" OR 26" X 16" duct opening (measured at the opening) + Product Details Size 36"w X 26"h is the size for the duct opening measurement only