One Dual Monitor Arm or Two Single Arms?
Choose one dual mount when a suitable shared fixing point and the system's adjustment range fit both screens. Consider two separate arms when the displays need different positions, different load ranges or independent upgrade paths. Check the actual products: “dual” can describe a shared pole with separate arms, a fixed crossbar or another arrangement entirely.
The choice becomes clearer when you draw the fixing points and list each monitor separately. Counting screens is only the start.
Compare the architecture you are buying
| Decision | One shared-base system | Two complete single arms |
|---|---|---|
| Fixing points | One suitable location carries the system | Two suitable locations are needed |
| Screen adjustment | Depends on the arms, collars and heads in that configuration | Each base and arm can be positioned separately within its limits |
| Mixed displays | Each arm must suit its assigned screen | Different arm types can be selected for different screens |
| Rear clearance | Check how both arms fold around the shared base | Check both folded shapes and their interaction |
| Future changes | Confirm supported configurations and compatible parts | Each complete arm can be reassessed separately |
| Total cost | Include the complete configuration and necessary accessories | Include both complete mounts and their accessories |
A shared base does not necessarily mean that both screens move together. The Hexcal Monitor Mount System in its Dual Arms configuration has a separate arm and monitor mounting head for each screen. Each arm attaches to the shared pole with its own height-setting collar, so the two screens can be positioned independently within the system's range.
The screen layout guide covers where to put the displays. Here the decision is which mounting architecture supports that layout.

Distinguish a complete arm from an addition kit
A complete single-screen Monitor Mount System includes the base that attaches to the desk. A Single Arm Addition supplies an extra arm, extension, pole collar and monitor mounting components for a supported existing system. It has no separate desk base.
Choose an addition kit when you already have the matching base and pole. Before ordering, give the supplier your existing configuration and the number of screens you want to add so they can identify the parts you need.
This distinction also matters when comparing prices. A lower-priced component is not a complete alternative if it needs mounting hardware that you don't already have.
Match each screen to its arm
For two similar displays, a shared system can keep both arms on one fixing point. Check the weight, mounting holes and required position of each screen.
For a heavy curved primary screen and a lighter secondary, separate arm types may be worth considering. A Heavy Duty Monitor Arm can serve one large display while a Single Monitor Arm serves a suitable smaller one. Both mounting locations still need to pass the desk check.
The Monitor Mount System's Dual Arms configuration supports 2–20 kg per arm for flat screens and 1–14 kg per arm for curved screens. The separate Hexcal Single Monitor Arm supports 3–11 kg. Choose the range that includes your monitor's mounted weight, including any adapter.
Check both displays individually. Two monitors with an acceptable combined weight can still leave one arm overloaded, and the desk needs a suitable fixing surface for the complete arrangement.

Think through the next change
Match the choice to your next change:
Two matching screens, both used throughout the day. Compare the shared system's reach and height with the required side-by-side position. Two complete arms are another option if the desk offers suitable fixing points and their movement fits.
One large curved screen and a smaller portrait display. Check the main screen's load and depth separately from the side display. Then check the portrait screen's rotation path and the space between the housings.
Two screens now, with a third planned later. Ask the supplier to list the base, pole and arms needed for all three screens. That lets you compare the upgrade with buying another complete single arm.
Keep your monitor list and fixing-point photographs with the plan. When you upgrade, they turn product names into a compatibility check.
Check the wall and the complete price
Moving the bases apart can change where separate arms fold. It can also put one base beside a drawer rail or leave an arm approaching the rear edge of the desk. Use the small-desk clearance plan with the same target screen positions for both options.
Compare current prices for complete, suitable configurations in your market, including necessary adapters, accessories and delivery. Compare that total alongside the fixing points and movement each option gives you.
The Hexcal Monitor Mount System is one shared-base route. Choose it for a shared fixing point, or choose separate complete arms when you need to spread the bases apart or mix arm types. A well-planned workstation should remain understandable when one screen changes.




