Create eye-catching designs by combining all three VERSA-LOK units to form the random-patterned Mosaic Retaining Wall System. Attractive and durable, the Mosaic system utilizes the same four-unit panel (10" x 24")–consisting of one Standard, one Cobble and two Accent units–giving each wall a vintage look and feel. Although its pattern may seem complex, the simplistic four-unit Mosaic panels are just as easy to install as our Standard, Cobble or Accent Retaining Wall Systems.