Mount an additional monitor to your LX Arm or Tall Pole with the white Ergotron LX Extension Arm Kit. It supports displays up to 40" weighing 7 to 25 lb with 75 x 75 and 100 x 100mm VESA patterns, allowing compatibility with most monitors. It provides -70 to 5° of tilt and 360° of rotation, swivel, pivot, and roll adjustments, as well as up to 13" of height adjustment and up to 24" of arm extension, allowing you to position your monitor wherever you'd like within your workspace.

Works with LX Arms and Tall Poles    Adds an Arm to Your Existing Setup    Supports Displays from 7 to 25 lb    Supports Displays up to 40"    75 x 75 & 100 x 100mm VESA Support    -70 to 5° of Tilt Adjustment    360° of Rotation, Swivel, and Pivot    Provides Up to 13" of Height Adjustment    Provides up to 24" of Arm Extension

• Enables your existing LX Arm or Tall Pole to support an additional monitor
• 10,000-cycle test applied to the lift mechanism, ensuring years of trouble-free height adjustment
• Arm can be used with or without the extension, attaching directly to your compatible pole or the end of the extension
• Can be configured to hold a laptop instead of a monitor with the optional Notebook Tray

Related Questions and Answers

Q: 1. I would use this mount on a standing desk, but my concern is that it needs a good amount of clearance behind the desk for the arms. I only have about 3 between my desk and the wall. Would it be able to fit in that space without the monitors being too close to the front of the desk? Thanks.

A: I have a free standing desk and when the monitors are pushed all the way back they extend about 10 past the back of my desk. Where mine are at usually they are less than 7 . With that being said, if there was a wall behind my desk the arms articulate plenty and still allow a lot of flexibility. You could also only use 1 set of arms to reduce the range and not have the arms protrude beyond the back of the desk.

Q: 2. I want to get this LX Dual Side by Side Arm for 2 Eizo 24 monitors.It seems to be good height. I am more worried about extension. I have a diagonal/radius corner desk, with my main monitor in front of the corner (so plenty of room behind monitor). My secondary monitor is angled to the first on a part of work surface which is only 24 deep. I don't want the monitor too far forward on that surface - about 13 from front of desk is good. Seems that is possible and one just has to play with placement of the grommet mount to get the most flexibility. Do you agree?

A: I concur.

Q: 3. What is the max height you can bring a monitor up?

A: The center of the arm extends approx 15 above the surface that the arm is mounted to. The distance to the bottom or top of the monitor will obviously vary based on monitor size but you can calculate that. Hope this helps.

Q: 4. What's the difference between this Ergotron LX HD vs. non HD version?

A: The HD mount supports a larger display, up to 46" as opposed to 34". It supports a larger VESA pattern, up to 200 x 200mm as opposed to 100 x 100mm. Also it supports displays weighing up to 30 lbs. as compared to 25 lbs.

Q: 5. will this work with a Dell 27" display? Is it easy to mount

A: The Ergotron LX Desk Mount Monitor Arm will support any monitor up to 34", weighing less than 25 lbs. and with a VESA mounting pattern of 75 x 75 to 100 x 100 mm. Installation is fairly straight forward and simple.

Q: 6. I can't understand the decription. But if I have two 27 monitors, will this fit?

A: I have two Dell Professional P2714H ? 27 Monitors on mine and it works well.

Q: 7. Can you stack two 27” monitors on top of each other with this stand?

A: Yes you can stack to 27" monitors. Note: Supported Screen Sizes Up to 40" / 102.0 cm Number of Displays Supported 2 Load Capacity 20 lb / 9.1 kg (Per Arm) Mounting-Hole Pattern 75 x 75 to 100 x 100 mm Height Adjustment 13.0" / 33.0 cm Pole Height 22.00" / 55.9 cm https://bit.ly/3kaUuZp

Q: 8. Will this support the Cintiq 27QHD?

A: Short answer - No. As previously stated regarding Macs, the way this connects is with a plate and screws. I have the smaller Cintiq (not the 27) and it does not have the appropriate connection. I doubt the 27 does either. This is made specifically for monitors that have the VESA mount.

Q: 9. Just clarifying that the weight capacity is for Individual monitor weight? (7-20 lbs per monitor) 20-40lb total weight...

A: The Ergotron LX Dual Desk Mount Side-by-Side Arm (Black) BH #ER45245224 will support up to two 27"monitors, each weighing from 7 to 20 pounds.

Q: 10. How much space (height) is necessary under the desk? I have a cable manangement tray in the backside of my desk and I wonder if this may interfere with the bracked.

A: As others said, the height is around 4".