The Z22PLB125 is a unique bracket. The screen hanging system on this bracket is based on hooks and pulleys to move the screen into position. This alleviates the need to mount the screen on a large, sometimes cumbersome bracket whilst attempting to position it and tighten hardware at the same time.The vertical arms attatch to the back of the screen, the arms then hook onto the horizontal arm and string pulleys are used to position the screen to the desired location. Discreet in appearance, easily hidden.