This is the EWI Tourcase tm triple fan mount vented rack panel model RP3UVF.
This is a metal rack panel made from 14 gauge steel, suitable for mounting in racks where additional air flow is needed. This 3U rack panel allows the mounting of up to three 120mm sized fans (not included) for even more cooling capability. The mounting holes for the fans are on 4 1/8" centers. The panel features a 0.25" top and bottom lip for added strength and finished appearance when placed against existing rack equipment. The length is 19" and the finish is matt black powder coating. Each panel comes with 4 rail screws and washers.