RFUV | 3U & 4U Rack Mount Clamp Style Rack Shelf

This is the EWI Tourcase tm Clamp Rack Shelf. 

These are metal rack shelves made from 14 gauge steel, suitable for mounting non-rackable equipment in conventional 19" racks. Two sliding hold-down bars "clamp" the piece of equipment in place.  The clamping range is 2.25" to  4.25" on the 3U and 4" to 6" on the 4U.  The width is 17" between side walls, the depth is 14" and the finish is matt black powder coating.  Each shelf comes with 4 rail screws and washers.