Ergotron LX Dual Stacking Arm Extension And Collar Kit Bright White

SKU 98-130-216

Convert an existing LX Arm to hold two, three or four monitors, creating a stacked multi-monitor configuration. This kit easily attaches to the pole of the desk mount base.

Recommended for use with the LX Arm, Tall Pole.


  • Easily add a second, third or fourth display to your LX desk mount to hold another monitor or laptop computer
  • Cable management feature routes cables under the arm, out of the way
  • Easy to use: Simple installation and effortless operation
  • Patented Constant Force™ lift-and-pivot motion technology
  • Passes Ergotron’s 10,000-cycle motion test, which ensures years of trouble-free height adjustment


  • UPC: 698833063592
  • Part Numbers: 98-130-216 (white with grey accents), 98-130-231 (silver with grey accents), 97-940-026 (polished aluminum with black accents)
  • Description: LX Arm, Extension and Collar Kit
  • Includes LX arm, extension, pole collar, cap, attachment hardware
  • Can be configured to hold a laptop instead of an LCD display; also order the accessory Notebook Tray (50-193-200)
  • * Weight Capacity: 7 to 25 lbs (3.1 to 11.3 kg). With monitors greater than 20 lbs (9.1 kg) in weight, the vertical range of motion may be reduced up to 4.5" (11 cm) for a total height range of 8.5" (22 cm)
  • Mounting Standards: VESA FDMI MIS-D, 100/75, C (hole pattern: 100 x 100 mm & 75 x 75 mm)
  • Quality Tested: 10,000-cycle test applied to lift mechanism, ensuring years of trouble-free height adjustment
  • Complies with all international environmental regulations related to its design, manufacture and packaging. Read more about our Environmentally Responsible Process
  • Arm can be used with or without Extension; attaches directly to pole or at end of Extension
  • This kit is not compatible with LX Sit-Stand Arm systems
  • Shipping Dimensions: 17.5" x 7.75" x 6.5" (44 x 20 x 17 cm)
  • Shipping Weight: 5 lbs (2.3 kg)
  • Warranty: Ten (10) years

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