This bracket is designed for six standard VESA compliant mounts 3" x 3" (75 mm x 75 mm) or 4" x 4" (100mm x 100mm). Each bracket can handle monitors up to 25 lbs each. The two outside Z-arms are built with five knuckles for adjusting. The center only has one knuckle. This allow each row of monitors to line up three straight across in one line. They swivel left and right with a total 180°. The monitor will swivel 270° and pivot upwards & downwards. The Z-arm is mounted on a 30" pole and may be adjusted in height to accommodate the user. The Z-series clamps can also be wall-mounted. Limited five year warranty except for electronics and motors which are covered for one year as are Lights and illuminators.