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![Photo 1 of [2 Pack] Fits 10x4 Duct Opening Steel Adjustable Air Supply Grille by Handua | Register Vent Cover Grill for Sidewall and Ceiling | Black | Outer Size: 11.75" X 5.75"](https://images-na.ssl-images-amazon.com/images/I/61q3im0c7JL.jpg)