Abstract: A portable light box having a light tray, with a cover having an aperture therein with the cover hinged to the light tray. A diffuser is secured in the aperture. A base is also hinged to the light tray. Bail means releasably lock the cover to the light tray, thereby securing the diffuser in the aperture, and may function as a carrying handle or an easel strut to support the light tray at a predetermined angle to the base.

Abstract: A movable aisle storage system is provided having rail and panel connector units which perform the dual functions of forming the rails and interconnecting the deck panels of the system track and deck assembly. Each connector unit has a substantially cylindrical rail portion and a depending support portion having a pair of upwardly and outwardly extending flange sections which support and secure the sides of the deck panels. Levelling screws threadedly engaging the unit support portion are seated in a channel to facilitate system installation and prevent floor damage. Flexible seal strips are used between the rails and panels thereby reducing system maintenance and permitting access to the levelling screws after system installation. Rail sections are joined to form an extended track by a self-tightening rail section joiner having a pair of tapered head machine screws which threadedly engage holes in abutting rail sections. A joiner member overlies the rail section holes and has openings to receive the screws.