14"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 15.75"w x 15.75"h] Compatible with Duct 10" + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size – 36"w X 18"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 25" OR 25" X 16" duct opening (measured at the opening)

Quality Packaging – carefully shrink wrapped with cardboard backing to prevent damage in shipment

+ Product Details Size - 8"w X 36"h is the size for the duct opening measurement only

High Quality – Solid rigid steel body for durability and reliability with dampers operable by switch for airflow directional control

14"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh White [Outer Dimensions 15.75"w x 15.75"h] Compatible with Duct 10" + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size – 36"w X 18"h is the size for the duct opening measurement only + Product Details Perfect Fit & Easy Sizing Designed for a 16" x 25" OR 25" X 16" duct opening (measured at the opening)