16"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Black [Outer Dimensions 17.75"w x 9.75"h] Aluminum 6" width X 9 Suitable for all AC 8in diameter 12125SDCLNGBX

6" width X 9

this thermostat guard combines dependable security with a professional and attractive appearance

our Butterfly Damper simplifies the process of managing airflow

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 24" or 24" x 12" duct opening (measured at the opening)

16"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh Black [Outer Dimensions 17.75"w x 9.75"h] Aluminum 6" width X 9 Suitable for all AC 8in diameter 12125SDCLNGBX 6" width X 9 this thermostat guard combines dependable security with a professional and attractive appearance