Ergotron LX Pro Dual Stacking Arm White
PRODUCT DESCRIPTION
Ergotron LX Pro Dual Stacking Arm White (45-690-290) - 10 Years Local Warranty
Two Displays Stacked Vertically, One Desk Footprint
The LX Pro Dual Stacking Arm in White (45-690-290) mounts two monitors one above the other on a single 12" (30.4 cm) pole. For trading floors, NOC and monitoring desks, dev workstations and document-review roles, stacking buys vertical screen area without spending the desk width that a side-by-side pair demands — a real advantage at Singapore desk sizes.
44 lbs Total Across Two Independently Adjustable Arms
Each arm carries a display of 4–22 lbs (1.8–10 kg), for a total system capacity of 44 lbs (20 kg), and each moves independently: 13" (33 cm) of lift, 85° of tilt (+70° / -15°), 180° of monitor pan and 360° of monitor rotation. Set the upper screen for reference and the lower one for primary work and leave both exactly where they belong.
Constant Force Motion and 25.8" of Reach
Constant Force motion technology means tool-free, one-hand repositioning that holds its place. Maximum extension reaches 25.8" (65.6 cm), and the base arm pans 360° — or 180° with the rotation stop engaged. The arm pairs naturally with a sit-stand desk, following you between seated and standing heights through the day.
Clean Cabling, Aluminium Build, 10-Year Warranty
Integrated cable management with a cable cover keeps two displays' worth of cabling out of sight, and durable aluminium construction holds alignment over years of adjustment. Ergotron backs the LX Pro Dual Stacking Arm with a 10-year manufacturer warranty; SourceIT supplies it with local Singapore warranty and a GST invoice.
Ergotron LX Pro Dual Stacking Arm Datasheet — Technical Specifications
General
| Product Type | Dual-monitor desk arm, vertical stacking, full motion |
| Mounting | Two-piece desk clamp (grommet mount also supplied per datasheet contents) |
| Pole | 12" (30.4 cm) pole included |
| Lift Technology | Constant Force motion technology |
| Cable Management | Integrated cable management with cable cover |
| Construction | Durable aluminium construction |
| Shipping Weight | 22.2 lbs (10.1 kg) |
| Shipping Dimensions | 22.8"L x 18.6"W x 6.5"H (58 x 47.3 x 16.4 cm) |
Display Compatibility
| Typical LCD Size | ≤ 24" per display |
| Weight Capacity (per display) | 4–22 lbs (1.8–10 kg) |
| Total Weight Capacity | 44 lbs (20 kg) |
| Number of Displays | 2 (stacked vertically) |
| VESA Pattern | VESA MIS-D, 100/75, C (100 x 100 mm & 75 x 75 mm) |
Adjustment & Motion
| Lift (Height Adjustment) | 13" (33 cm) |
| Tilt | 85° (+70° / -15°) |
| Monitor Pan | 180° |
| Base Arm Pan | 360° (180° with rotation stop engaged) |
| Monitor Rotation | 360° (portrait / landscape) |
| Maximum Extension | ≤ 25.8" (65.6 cm) |
Design & Durability
| Part Number | 45-690-290 |
| Finish | White |
| Series | Ergotron LX Pro |
| Materials | Aluminium construction |
| Warranty | 10-Year Manufacturer Warranty (Ergotron) |
| Local Warranty | Local Warranty (Singapore) |
Compatibility & Fit
Displays. Two screens of typically ≤ 24" each, stacked vertically. Each arm carries 4–22 lbs (1.8–10 kg), with a total system capacity of 44 lbs (20 kg). Check your monitor's published weight with its VESA plate before ordering — a screen under the 4 lb floor may be too light for the Constant Force mechanism to hold position correctly.
VESA. VESA MIS-D, 100/75, C (100 x 100 mm & 75 x 75 mm). Displays without a VESA pattern need the manufacturer's own adapter plate.
Mounting. This part number is the two-piece desk clamp configuration, and the datasheet box contents list a grommet mount as well. Ergotron also publishes dedicated grommet (45-710-xxx) and C-clamp (45-714-xxx) versions of the LX Pro Dual Stacking Arm if your desk requires one; contact SourceIT to source those part numbers.
Ultrawide and curved screens. The 24" typical size and the 22 lb per-arm ceiling make this a stacking arm for standard-format displays. A single ultrawide or a large curved panel belongs on a single-display arm rated for it — see the LX HD Sit-Stand Desk Arm.
Package Contents & LX Pro Ordering Information
What's in the Box
(2) Arms, (2) extensions, (2) monitor pivots, grommet mount or 2-piece desk clamp, 12" (30.4 cm) pole, attachment hardware
LX Pro Dual Stacking Arm Series Ordering Information — Finishes
| 45-690-292 | Matte Black |
| 45-690-293 | Dark Grey |
| 45-690-290 | White (this listing) |
Related Ergotron LX Models at SourceIT
Other LX Pro Models in This Batch
| 45-683 | LX Pro Wall Monitor Arm |
| 45-685 | LX Pro Wall Keyboard Arm |
| 45-696 | LX Pro Wall Mount System |
Datasheet & Downloads
Frequently Asked Questions — Ergotron LX Pro Dual Stacking Arm
Do the Matte Black, Dark Grey and White versions differ in any way other than colour?
No. 45-690-292, 45-690-293 and 45-690-290 are the same LX Pro Dual Stacking Arm with the same published specifications; only the finish differs. This listing is the White version (45-690-290).
What size and weight of monitor does each arm take?
Each arm is rated for a display of typically ≤ 24" weighing 4–22 lbs (1.8–10 kg), with a total system capacity of 44 lbs (20 kg). Note the 4 lb lower limit — a very light panel may not hold position on a Constant Force mechanism.
Why stack the monitors instead of placing them side by side?
Stacking uses vertical space rather than desk width, which suits trading, monitoring, coding and document-review work where a primary and a reference screen are read together. If you would rather have them side by side, Ergotron publishes LX Pro Dual Side-by-Side (45-686-xxx) and Dual Direct (45-684-xxx) configurations — contact SourceIT to order those part numbers.
How does it mount to my desk, and what about grommet holes?
This part number ships as a two-piece desk clamp, and the datasheet box contents also list a grommet mount. Ergotron separately publishes dedicated grommet (45-710-xxx) and C-clamp (45-714-xxx) versions if your desk needs one. Confirm your desk thickness and edge profile against the clamp before installation.
Do I need a VESA adapter?
Only if your display has no VESA pattern. The pivots are VESA MIS-D, 100/75, C (100 x 100 mm & 75 x 75 mm), which covers most business monitors; screens without VESA holes need the manufacturer's own adapter plate.
Does it work on a sit-stand desk?
Yes. Each arm provides 13" (33 cm) of Constant Force lift on top of whatever range the desk itself offers, so both screens stay at eye height as the desk moves between seated and standing positions.
How does it compare with the Ergotron LX HD Sit-Stand Desk Arm?
The LX HD Sit-Stand Desk Arm (45-384-026) is a single-display heavy-duty arm built for one large or ultrawide screen; the LX Pro Dual Stacking Arm is built for two standard-format displays on one pole. Choose by screen count and panel size.
Does this come with a Singapore warranty and a GST invoice?
Yes. Every Ergotron LX Pro Dual Stacking Arm sold by SourceIT comes with local Singapore warranty and a GST invoice; Ergotron backs the LX Pro Dual Stacking Arm with a 10-year manufacturer warranty.
