Patent 10988953 was granted and assigned to USG Interiors Inc on April, 2021 by the United States Patent and Trademark Office.
A perimeter pocket system with an inner wall having a brace connecting protuberance and an extended ceiling supporting ledge with grid tee end reference marks or coupling structure for an extension. Grid tee connector clips have cam slots for raising grid tees in a seismic event and features imparting rigidity and vibration resistance.