M/Flex for M8 Pro Triple Monitor Arms

The world’s best-selling monitor arm. Moves with you to provide effortless adjustment and commercial-grade performance.

Design Features

  • Triple monitor support

    Triple monitor support

    Mount three monitors to create a high-performance workstation setup.
  • Supports healthier posture

    Supports healthier posture

    Helps position screens at the right height and distance to reduce neck and shoulder strain.
  • Smart Stop rotation control

    Smart Stop rotation control

    Helps prevent screens from swinging too far and hitting nearby walls or objects.
  • Quick Release joints

    Quick Release joints

    Snap-together design makes setup faster and future upgrades easier.
  • Modular and expandable

    Modular and expandable

    Add or reconfigure monitors without starting over.
  • Living Product Certified (Net Positive)

    Living Product Certified (Net Positive)

    Climate, water, and energy positive manufacturing.
  • Independent screen adjustment

    Independent screen adjustment

    Adjust each monitor separately for better alignment and viewing comfort.
  • Built-in cable management

    Built-in cable management

    Routes cords cleanly through the arm system for a more organized workspace.
  • Built for larger monitors

    Built for larger monitors

    Designed to pair with M8 Pro arms for heavier screen configurations.

Specifications

Variant

SKU

X83BQTBC121NNNN

Number of Monitors

Triple Monitors

Warranty

15 Years

Dimensions

Maximum Monitor Width

30.5 in

Weight

Minimum Monitor Weight

9 lb

Maximum Monitor Weight

30 lb

Materials & Sustainability

  • Product Materials

    Structural components are made from die-cast aluminum, providing strength and precision while maintaining a lightweight form. Surfaces are finished with a durable powder-coated finish designed to resist scratches, fingerprints, and everyday wear while maintaining a consistent appearance.

Who It's For

For people who want a triple monitor setup with stronger support and smoother movement.

- Great for analysts, designers, developers, and multi-taskers working across multiple screens

- Ideal for home offices where you want a clean, clutter-free workstation setup

- A strong fit for professional environments that need flexibility for different users and workflows

Certifications & Testing
  • HPD
  • DECLARE® - Red List Free
  • Living Product Challenge
  • CDPH
  • BIFMA LEVEL® - Level 3
  • SCS Indoor Advantage Gold
  • MID

Care, Maintenance & Longevity

  • Monitor Arm Care & Cleaning

    Wipe down with a soft, damp cloth and mild soap if needed.

My dock has been easy to reach, and my desk has been cable-free; it's a tremendous ergonomic improvement.

Best monitor arm w/ built-in dock.

The iPhone of monitor arms.

4.4
Rated 4.4 out of 5 stars
Based on 9 reviews
Total 5 star reviews: 6 Total 4 star reviews: 1 Total 3 star reviews: 2 Total 2 star reviews: 0 Total 1 star reviews: 0
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9 reviews
  • Ethan B.
    Verified Buyer
    Rated 3 out of 5 stars
    Monitors slide okay

    Monitors slide okay, but sometimes sticks a bit on one side, not sure what the issue is but humanscale offered a replacement

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  • Camila M.
    Verified Buyer
    Rated 5 out of 5 stars
    Works good

    Works good. Took me a while to figure out the clamps but once it’s up, wow, so much space on the desk now.

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  • Daichi I.
    Verified Buyer
    Rated 4 out of 5 stars
    It's fine

    It’s fine. Looks nice but the side monitors droop if you really take the system all the way

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  • Caleb W.
    Verified Buyer
    Rated 5 out of 5 stars
    Heavy setup and almost

    Heavy setup and almost didn’t fit my old desk. Once mounted, okay but adjusting the angle takes some patience.

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  • Emi W.
    Verified Buyer
    Rated 5 out of 5 stars
    Assembly was kinda confusing

    Assembly was kinda confusing and the instructions are meh. Still, the end result is very clean and works.

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