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![Photo 1 of 10" x 14" Duct Hole [11.6" x 15.6" Face] Aluminum 1-Way Vent Cover: Adjustable Curved Blade Air Supply Diffuser - Plastic Seal for Tight Fit, Quiet Air Flow, Multi-Shutter Damper](https://images-na.ssl-images-amazon.com/images/I/71tjDq6DnhL.jpg)