Abstract: A panel retention device, a panel mounting system, and a panel assembly each including an adjustable flange in threaded engagement with a compression plate. In one version of each of the panel retention device, the panel mounting system, and the panel assembly, the compression plate is in indirect threaded engagement with an externally threaded adjustable flange through an internally threaded disk extending from the compression plate. In another version of each of the panel retention device, the panel mounting system, and the panel assembly, the compression plate is in direct threaded connection with the an externally threaded adjustable flange threaded into a threaded opening in the compression plate.

Abstract: A panel retention device is provided and includes a compression pad, a compression plate, a threaded disk, and an adjustable flange. The compression pad has a rectangular cross section and includes a plate opposing surface. The compression plate has a rectangular cross section and includes a pad support surface facing the compression pad and a disk support surface. The threaded disk extends from the disk support surface, and the adjustable flange is removably threaded onto the threaded disk.