UMI horizontal flat elbow in the context of a cable tray refers to a component used in cable management systems to change the direction of cables horizontally while maintaining a flat profile. Standard cable tray fitting fabricated using stainless steel (SS) angle plates and bolt sets. Available for purchase in a full composite system. These fitting are including: elbow, horizontal cross, vertical inside riser, reducers, cover clip, joint connector, horizontal cable tray tee, horizo. y duty pattern with standard perforations. The Ladder Tray features light, rugged, tubular steel construction.