Heavy-Duty & Ultrawide Monitor Arms — Up to 49″ and 18 kg
Heavy-duty gas-spring monitor arms for large, curved and ultrawide screens — up to 49 inches and 18 kg on a single desk-mounted arm. Supplied and installed by Vantage Systems with GST invoice and 3-year LUMI India warranty.
When a standard arm is not enough
Most office monitor arms are rated to around 8–9 kg and 32 inches. That covers the majority of desks — and none of the interesting ones. A 34-inch ultrawide, a 43-inch panel on a control desk, a 49-inch curved super-ultrawide on a trading or design position: all of them are outside what a standard arm will safely carry.
Heavy-duty arms solve this with a stronger gas-spring cylinder and a heavier post and joints. The LUMI LDT52-C012 is the model we supply for this class — rated 1–18 kg, sized for screens up to 49 inches, including curved and ultrawide panels, with 460 mm of extension so a large screen can still be pushed back to a comfortable distance.
The mechanism matters as much as the rating. A mechanical spring strong enough to hold 18 kg is too stiff to move without both hands, which is why every serious heavy-duty arm is gas spring: the piston counterbalances the weight, so a 15 kg screen still moves at a fingertip and stays where you leave it.
- Rated 1–18 kg — 14 kg for curved screens
- Screens up to 49 inches, including ultrawide and curved
- Gas spring — heavy screens still move at a fingertip
- 460 mm extension for comfortable viewing distance
- ±180° rotation, tilt ±45°, swivel ±90°
- Clamp or grommet fixing — grommet preferred for heavy screens
Check before you order
Trading floor, control room or design studio?
Heavy and ultrawide screens usually come in quantity on desks like these. Tell us the panel model and the desk count and we will confirm the arm and quote the rollout.
Heavy-duty arms we stock
Heavy-Duty Single Gas-Spring Arm
The heavy-duty single arm — 1–18 kg, screens to 49 inches including curved and ultrawide, 460 mm extension. This is the model for a 34-inch or 49-inch ultrawide desk.
- Fits 17″–49″ monitors (incl. ultrawide & curved)
- Holds 1–18 kg
- VESA 75×75 & 100×100 mm
- Gas spring · tilt ±45°, swivel ±90°
- Rotation ±180° · extends to 460 mm
- Clamp or grommet
Heavy-Duty Dual Gas-Spring Arm
The dual version — two screens up to 35 inches at 1–15 kg each, independently gas-sprung. For dual heavy-screen positions on trading and control desks.
- Two 17″–35″ monitors from one fixing
- Holds 1–15 kg per screen
- VESA 75×75 & 100×100 mm
- Independent gas-spring tilt ±45°
- Rotation ±180° · extends to 460 mm
- Clamp or grommet
Premium Slim Aluminium Dual Arm
A mechanical-spring premium dual arm for 17–32-inch screens up to 9 kg — large panels, but well short of heavy-duty. Included here so the step up to the LDT52 is clear.
- Two 17″–32″ monitors
- Holds 2–9 kg per screen
- VESA 75×75 / 100×100 mm
- Mechanical spring · slim aluminium
- Clamp or grommet
About 57-inch super-ultrawide panels: we do not recommend a desk-clamped arm at that size. The largest screen the LDT52-C012 is rated for is 49 inches, and a 57-inch panel puts more leverage on a desk clamp than most desks will take. For screens that large we would specify a floor stand or a wall mount — both of which we supply. Ask us and we will quote the right one rather than sell you an arm that is out of its rating.
Desks that need a heavy-duty arm
Trading & dealing desks
Control rooms & NOCs
Design & CAD workstations
Video & post-production
Radiology & diagnostic reporting
Plant & SCADA operator desks
Developer workstations
Gaming & esports setups
Heavy-duty & ultrawide arms — FAQs
An arm rated well above the 8–9 kg that a standard office arm carries. In our range that is the gas-spring LDT52-C012, rated 1–18 kg for a single screen and sized for panels up to 49 inches. If your monitor weighs more than about 9 kg without its stand, this is the class you need.
The LUMI LDT52-C012 is rated for screens up to 49 inches, including curved and ultrawide panels, at up to 18 kg (14 kg for curved screens). That covers the common 49-inch super-ultrawide panels used on trading and design desks. Always check your specific monitor’s weight without the stand before ordering.
Not in this range. The largest screen we can support on a single desk arm is 49 inches on the LDT52-C012. 57-inch super-ultrawide panels are heavier and longer than any desk-clamped arm we stock is rated for — and very few desks will take that leverage on a clamp. For screens that size we would look at a floor stand or a wall mount instead, and we can quote either.
Not a different arm, but a lower weight allowance. On the LDT52-C012 the rating is 18 kg flat and 14 kg curved — the curve shifts the centre of mass further from the VESA plate, so the arm carries less. Use the curved figure when checking your screen.
Effectively, yes. A mechanical spring stiff enough to hold 15–18 kg is too stiff to adjust comfortably. A gas piston counterbalances the weight so a heavy screen still moves at a fingertip — which is why every heavy-duty arm worth buying is gas spring.
This is worth checking before you order. A heavy arm on a thin, unsupported or glass desktop can flex or mark it. The clamp needs a desktop within its thickness range and ideally a supported edge; the grommet fixing spreads the load better. On corporate orders we check this at the site survey.
Get a heavy-duty monitor arm quote
Send us the panel model — we will check the weight against the arm’s rating and confirm in writing before you order. GST invoice, warranty and installation included.