Duck Checked

Decision tool · Sources checked July 26, 2026

Will this monitor, arm, and desk work together?

Bring the exact manuals and a tape measure. This check refuses to turn “probably” into a green light.

11
fit checks
5
primary sources
Oct. 26
next review

Follow the weight all the way to the desk

Pull the exact numbers from the monitor manual, arm manual, and the desk in front of you. Screen size alone is not a compatibility spec.

01 Monitor without the stand

Use bare display weight, not shipping weight and not weight with the factory stand.

02 Arm specification

Accepted VESA patterns

Can the arm rotate this monitor to portrait?
03 Clamp and desk edge
Anything blocks the clamp underneath?
Does the desk maker permit this clamp?
04 Intended layout
Screen orientation

These specifications stay in your browser. They are not added to the URL, saved, logged, or sent with analytics.

What passed, failed, or is missing

No clean bill of fit yet

Fill the spec sheet, then keep every failed or unknown link visible.

  1. Monitorpattern · weight · span
  2. Plateexact VESA match
  3. Armcount · reach · rotation
  4. Clamprange · footprint · jaw
  5. Deskclearance · maker approval
  1. —
    The check is waiting for your numbers

    A missing specification stays missing. The checker will not fill it with a typical value.

Duck checks the clamp connection underneath a monitor mounting arm.

Before entering the numbers

Measure the installed object, not the ad

  • Remove the factory stand from the weight calculation. Use the bare display weight the monitor maker documents.
  • Measure VESA holes center to center across and down. “VESA compatible” is not one universal pattern.
  • Check the desk edge from above and below at the exact same spot.
  • For multiple monitors, measure the full outside span and the furthest screen center from the clamp.

Sources behind the checks

Why these checks are here

The standards define the questions. Exact product and desk documents must provide the numbers for your setup.

ErgotronVESA Mounting Guide for Monitors

The guide says hole pattern and monitor weight are the primary compatibility criteria, while screen size matters when surrounding space constrains installation.

Checked 2026-07-26 · Refresh by 2026-10-26Read primary source
ErgotronLX Desk Mount LCD Monitor Arm

One current arm documents exact VESA patterns, a minimum and maximum weight, a clamp-thickness range, maximum extension, and a capacity caveat for deeper monitors.

Checked 2026-07-26 · Refresh by 2026-10-26Read primary source
DellDell Pro Dual Monitor Arm MDA20 Features

Dell documents per-arm weight, supported monitor count, VESA interface, desk-clamp thickness, and grommet limits for one dual arm.

Checked 2026-07-26 · Refresh by 2026-10-26Read primary source
DellDell Pro Heavy Duty Single Monitor Arm HDA26 Setup

Dell's setup guidance requires its clamp to be secured on a flat surface within the product's documented thickness.

Checked 2026-07-26 · Refresh by 2026-10-26Read primary source

Duck's call

What to do next

Check VESA, weight, clamp, clearance, reach, span, and approval as one chain.

Leave this page with

A clear yes, no, or check-the-manual answer for every mounting requirement.