18"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 7.75"h] Compatible with Duct 10" Incorporated with Integral Butterfly Damper Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

Incorporated with Integral Butterfly Damper for full Airflow Control

Choose our premium HVAC grilles and registers for long-lasting durability

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 6" or 6" x 8" duct opening (measured at the opening)

actual front end outer dimensions are approximately 15

+ Product Details Outer dimensions: – fits a duct opening

18"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 19.75"w x 7.75"h] Compatible with Duct 10" Incorporated with Integral Butterfly Damper Compatible With Duct 7in Applications This sheet metal DDAG A 1212 Incorporated with Integral Butterfly Damper for full Airflow Control Choose our premium HVAC grilles and registers for long lasting durability