Two Ergotron LX Pro arms on a tall 30.4 cm pole, so two screens of 1.8 to 10 kg and up to 24 inches can stack or sit side by side. Constant Force lift through 33 cm per screen, 85 degrees of tilt, desk clamp included, and Ergotron's 10-year warranty.
Ergotron LX Pro Dual Stacking
One Screen Above the Other
The LX Pro Dual Stacking Arm mounts two LX Pro arms on a tall 30.4 cm pole, so two screens can stack one above the other. Stacking keeps the desk narrow and puts both screens in the same line of sight, which suits trading, monitoring and coding desks.
Ergotron rates each arm for 1.8 to 10 kg and screens up to 24 inches, 20 kg in total, with 33 cm of lift per screen.
Movement
Stacked, Spread or Angled
Because each screen is on its own arm, the pair can stack, sit side by side or angle in, and change between them as the work does. Each tilts 85° (70° up, 15° down), pans 180° and rotates 360°.
Ergotron's Constant Force™ lift keeps the effort to move each screen small and even through the range.
Ergotron LX Pro Dual Stacking Arm installation and adjustment
The Details
Five Things That Make It an LX Pro Stacker
The tall pole, the side-by-side option, the lift, the rating and the rotation stop.
A 30.4 cm Pole
Tall enough to stack two screens one above the other.
Side by Side Too
Swing the arms out and the same mount holds two screens next to each other.
33 cm of Lift Each
Each screen moves on its own Constant Force™ spring.
Up to 10 kg Each
Screens of 1.8 to 10 kg and up to 24 inches, 20 kg in total.
Rotation Stop
The base pans 360°, or 180° with the rotation stop engaged.
The Numbers
- Screen Weight
- 1.8–10 kg each
- Total Weight
- 20 kg
- Screen Size
- Up to 24 in
- Pole
- 30.4 cm
- Lift
- 33 cm
- Warranty
- 10 years
Figures are from Ergotron's LX Pro specification sheets and dimension drawings (2025–2026). Where Ergotron's sheets differ between editions, the lower figure is shown. Weigh your screen without its stand. Ergotron does not publish the clamp's desk-thickness range on the stacking arm's sheet; call us to check your desk.
Set-Up
Set Each Spring Before the Screen Goes On
Each LX Pro arm carries Ergotron's tension indicator, so the spring can be set to a screen's weight before the screen goes on, which matters on a stacker where the top screen is the hardest to reach.
The base pans 360°, or 180° with the rotation stop engaged. Ergotron does not publish the clamp's desk-thickness range on this arm's sheet; call us on 02 9640 0642 to check your desk.
LX Pro Dual Stacking, Black
This Model
This listing is the Ergotron LX Pro Dual Stacking Arm with desk clamp, in matte black (45-690-292). A grommet-mount version (45-710-292) is a separate part; ask us if you need it.
Screens side by side most of the time? The LX Pro Dual Side-by-Side takes larger screens, up to 27 inches.
Why We Stock the Ergotron LX Pro Stacker
We stock the LX Pro Dual Stacking Arm for desks where width is short and screens need to stay in one line of sight: two screens of up to 10 kg each, one above the other, each on its own Constant Force™ arm, from a single desk clamp.
Ergotron's warranty terms give 10 years on LX monitor arms, including the LX Pro, and claims are handled by Chair Dinkum in Sydney on 02 9640 0642. Your rights under the Australian Consumer Law for faulty or damaged goods are separate and are not limited by it.
Features & Specifications
Key Features
-Two LX Pro arms on a tall pole for stacked or side-by-side screens
-Screen weight 1.8–10 kg per screen; 20 kg total
-Screens up to 24 in each
-Constant Force™ lift: Ergotron's spring mechanism keeps the effort small and even through the range of movement
-Lift 33 cm per screen
-Tilt 85° (70° up / 15° down); monitor pan 180°; base pan 360° (180° with rotation stop engaged); screen rotation 360°
-Extension up to 64 cm (65.6 cm on Ergotron's Feb 2026 sheet)
-VESA 75 × 75 and 100 × 100
-30.4 cm pole
-Desk clamp included; grommet-mount version 45-710-292 is a separate part
-Finish: matte black 45-690-292
-Warranty: 10 years (Ergotron)
Downloads
Chair Dinkum — warrantyLink →Dimensions
Screens2, stacked or side by side
Screen Weight1.8–10 kg each
Total Capacity20 kg
Screen SizeUp to 24 in each
Lift33 cm
ExtensionUp to 64 cm
Tilt85° (70° up / 15° down)
Pole30.4 cm
VESA75 / 100 mm
MountingDesk clamp
Part Number45-690-292
Warranty10 years
Figures are from Ergotron's LX Pro specification sheets and dimension drawings (2025–2026). Where Ergotron's sheets differ between editions, the lower figure is shown. Weigh your screen without its stand. Ergotron does not publish the arm's own weight or the clamp's desk-thickness range on this sheet. Warranty terms are on our warranty page.
Frequently Asked Questions
If each screen weighs 1.8 to 10 kg without its stand, is 24 inches or smaller and has 75 or 100 mm VESA holes, it is within Ergotron's rating. Stacked screens larger than 24 inches can clash; call us if yours are bigger.
It comes with a desk clamp and needs a clear back edge. Ergotron does not publish the stacking arm's clamp range on its sheet, so call 02 9640 0642 with your desk thickness and we will confirm. A grommet version (45-710-292) is available to order.
Stacking saves desk width and keeps both screens in one line of sight, for screens up to 24 inches. The LX Pro Dual Side-by-Side suits two screens next to each other and takes up to 27 inches.
Yes. Each screen has its own arm, so they can stack, sit side by side or angle in.
10 years. Ergotron's warranty terms give a 10-year warranty on LX monitor arms, and the product's specification sheet states 10 years. Claims are handled by Chair Dinkum in Sydney on 02 9640 0642; full terms are on our warranty page. Your rights under the Australian Consumer Law for faulty or damaged goods are separate and are not limited by it.
Call 02 9640 0642 to check which arms are on display at our Pyrmont showroom, 1/209 Harris Street, before you visit. We can also check your screens and desk over the phone before you order.
