2 VPM Mounts on 28′ Tube with Grommet Base This multi-monitor configuration provides 12° of pivot and is VESA 100×100mm compatible. Two VPM mounts are included with a 28″ single pole with horseshoe grommet base for multi-monitor mounts. The grommet base fits any 2 1/8″ cable routing hole, standard in a standard office desks, cubicles or industrial consoles.