Easily adjust your monitor with this economical, manually adjusted monitor arm. Simple linked extension arm extends in or out, tilt or rotate for your perfect height. Height adjustable along the length of the pole mounted base. Strong durable construction withstand the rigors of the busy office. Easy to install clamp fits desk up to 4″ thick. VESA MIS-D compliant for monitors up to 15 lbs and 27″. Saves valuable desk space. Use with Alera? Sit-Stand Lifting Workstations. Dual Monitors. OEM/Compatible: OEM; Workstation Type: Desk-Mounted Sit/Stand Station; Floating Sit/Stand Station; Free-Standing Sit/Stand Station; Mobile Workstation; Traditional Desk/Table; Series Name: Alera? AdaptivErgo?; Width (Min): 3.88″.