A 4U high rack tray with three-piece construction. The sides attach to the base tray by 3 M4 screws (included), screwed into hank bushes. If equipment is tight for space, simply slacken screws until the equipment can be positioned in-tray, then tighten screws.
The tray only can be inverted to provide an additional 13mm extra usable height, this provides much greater rigidity than cheaper 'one piece' versions.
Finished in black epoxy resin. Able to support up to 20kg evenly distributed.