MM-HP15 Features: -15" Single pole with horse shoe grommet base for multi-monitor mounts. -Grommet base fits any 2 1/8" cable routing hole, standard in a standard office desks, cubicles or industrial consoles. -Through counter base allows cable and power to be routed through a solid surface. Product Type: -Extension column/Extension column accessories. Color: -Black. Generic Dimensions: -Weight capacity per mount: 75 lbs. Dimensions: Overall Product Weight: -4.2 Pounds. Overall Height - Top to Bottom: -15 Inches. Overall Width - Side to Side: -2.5 Inches. Overall Depth - Front to Back: -2 Inches.