Duplex pulley systems.  The above illustrates a free standing system. As with the adjustable duplex system,   differing foot prints and leg configurations are available.  Frame widths, heights, and leg configurations can be determined by the customer based on needs.   Weight stack can be varied also.  A combination of 5lb and 10 lb plates are the norm.  Note that working weight are 50% of the actual plate weight due to the mechanical advantage built into the cable system.

The duplex pulley system has two pulleys on the top  of the frame and two on the bottom of the frame.  The cable consist of one continuous length with one end existing the top pulley and the other end exiting the low pulley.  The pulley bracket are all designed to swivel allowing them to move freely as the use pulls through a variety of motions.