Ergotron LX Dual Stacking Arm, Tall Pole, Black Accents, Polished

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Find your best view, save desk space and discover your most productive self, thanks to the LX Dual Stacking Arm, Tall Pole. This multi-monitor mount lets you position large screens separately for a new level of flexible working. Project wrapped up? Reclaim a space full of opportunities by folding the arms and pushing them aside during a much-needed screen break.

To add a third or fourth display, order the LX Arm, Extension and Collar Kit accessory.

PART NUMBER: 45-549-026


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Size Chart
Size Chart

Measuring Tips to Assure The Best Fit

  • Measure your back size – wrap the measuring tape snugly around your ribcage, just under your bust line 1, keeping it horizontal. This will give you your band size.
  • Then measure around the fullest part of your bust 2 , again keeping the tape horizontal.
  • To determine the size of pants, measure the girth of the waist 3 and hips 4
  • The following charts will help you match the designer’s size scheme for this product (indicated in the dropdown) to your usual size

size guide visible to all products

XS 8 4 34 31/32 23/24 33/34
S 10 6 36 33/34 25/26 35/36
M 12 8 38 35/36 27/28 37/38
L 12 8 38 35/36 27/28 37/38
XL 10 6 36 33/34 25/26 35/36

Extra flexibility

Each arm lifts, extends and rotates for the best view

More motion

Place screens up to 40" one over the other or on either side


Support up to four screens with the LX Arm, Extension and Collar Kit accessory

Sleek build

Streamlined look enhances your work area

Easy storage

Folds to fit under storage shelves or cabinets

Quality design

Built for thousands of movements by passing 10,000-cycle test

Part Numbers: 45-549-026 (polished aluminum with black accents)

Description: LX Dual Stacking Arm, Tall Pole

Includes two (2) LX arms and extensions, 22" pole, heavy-duty two-piece desk clamp base with dual screws, two (2) pole collars, two (2) caps, grommet mount plate and hardware, monitor mounting hardware

Can be configured to hold a laptop instead of an LCD display; also order the LX Notebook Tray (50-193-200)

Aluminum and steel construction offers greater durability

Snap-fit cap secures interface of arms to extensions for greater stability

New clamp and grommet mount base ensures greater stability of display and arm

† To facilitate stacking of monitors, maximum outside height of display should be no more than 21" (53 cm). To align monitors side by side, maximum outside width should be no more than 40" (102 cm). Most monitors with screen sizes of 40" or less fit within this specification

Mounting Standards: VESA FDMI MIS-D, 100/75, C (hole pattern: 100 x 100 mm & 75 x 75 mm)

Grommet mount attaches through hole 5/16" to 2" (7–51 mm) wide and up to 3" (75 mm) thick

* Weight Capacity

Two arms: 7–20 lbs (3.2–9.1 kg) each

Three or four arms: 7–11 lbs (3.2–5 kg) each

This product is certified in compliance with indoor air quality standards defined by ANSI/BIFMA pertaining to emissions of VOC (volatile organic compounds)

Product Weight: 19 lbs (8.6 kg)

Shipping Dimensions: 17.1" x 17.7" x 29.9" (18 x 45 x 76 cm)

Shipping Weight: 24 lbs (10.9 kg)

Warranty: Ten (10) years

2 Items

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