A full complement of brackets is intended for attaching system components to ladder rack, threaded rod, auxiliary framing, strut, equipment racks and raised floor pedestals. The FR6TRBE12 is used to support the 6x4 and 4x4 systems from existing threaded rod installations. Bracket is secured to threaded rod with two split nuts. The pre-assembled slide clamps enable fast assembly to channel. Use 7/16" nut driver on slide clamps.