NB ERGONOMIC D9C Dual Monitor Arm — 27–50″
Key Features:
- Heavy-duty dual monitor arm for two 27–50 inch flat, ultrawide & curved screens
- Load capacity: 2–15KG per arm
- Supports side-by-side (27–40″), wide side-by-side (27–49″) & vertically stacked (27–50″)
- Independent mechanical spring per arm — no gas pressure degradation
- Tilt ±90°, swivel ±90°, rotation 360° per arm
- Max height: 583mm (20.95″)
- Max arm extension: 635mm (25″) per arm
- Max spread between two VESA centers: 946mm (37.24″)
- Arm angle range: ±40°
- VESA 75×75mm / 100×100mm compatible
- Integrated cable management through both arms
- Single shared base — one C-clamp mounting point
- Tension adjustable per arm (adjust with monitor mounted)
₨ 21,999.00 ₨ 29,999.00
NB ERGONOMIC D9C — Mechanical Spring Dual Monitor Arm for Two 27–50 Inch Monitors
The NB ERGONOMIC D9C is a heavy-duty dual monitor arm engineered for gamers, creators, and professionals running two large, ultrawide, or curved displays simultaneously. Unlike standard dual arms designed for small-to-medium screens, the D9C is purpose-built for monitors from 27 to 50 inches with up to 15KG load capacity per arm — covering the full range of modern large gaming and professional displays.
In addition, the NB ERGONOMIC D9C supports three distinct dual-screen configurations — side-by-side, wide side-by-side, and vertically stacked. As a result, it is one of the most versatile dual large-screen arms available. Furthermore, the mechanical spring system on each arm ensures consistent, drift-free holding without the degradation issues associated with gas springs. Check out our full range of Monitor Arms at Backseat Gaming, or learn more on the NB ERGONOMIC official website.
Who Should Buy the NB ERGONOMIC D9C?
- Gamers running two large gaming monitors side by side for an immersive dual-screen setup
- Users who want to vertically stack two monitors to maximize screen real estate on a narrow desk
- Content creators and video editors who need two large reference or editing displays
- Professionals running dual large screens for trading, development, or multi-window workflows
- Anyone upgrading two separate monitor stands to a single unified dual-arm solution
NB D9C — Mechanical Spring System on Both Arms
Each arm of the NB ERGONOMIC D9C is powered by its own independent mechanical spring. In addition, the spring system supports monitors from 2 to 15KG per arm without drift or sag — handling large 40–50 inch displays that most dual gas spring arms struggle to hold reliably. As a result, both screens stay exactly where you position them.
Furthermore, the mechanical spring does not degrade over time, unlike gas springs that can gradually lose holding pressure. Tension is manually adjustable per arm via a tension screw — always adjust with the monitor mounted.
NB D9C — Three Dual-Screen Configurations
The NB ERGONOMIC D9C is engineered to support three distinct screen arrangements — giving you complete flexibility in how you organize your dual-monitor setup.
27″–40″
Ideal for matching gaming monitors in a standard landscape dual-screen setup
27″–49″
For ultrawide or mixed-size monitor combinations placed horizontally
27″–50″
One monitor above the other — perfect for narrow desks or coding and streaming workflows
Independent Full Motion on Both Arms
Each arm on the NB ERGONOMIC D9C operates completely independently with its own full range of motion. As a result, both screens can be positioned at different heights, angles, and orientations simultaneously. In addition, the wide extension range and high vertical reach make all three configurations achievable from a single fixed base point.
Single Shared Base — One Mounting Point
Both arms share a single compact base, requiring only one mounting point on your desk. In addition, this keeps the desk footprint minimal while still providing full independent motion on each arm. As a result, the D9C frees up significant desk surface space compared to using two separate monitor stands or two single-arm mounts.
Built-In Cable Management
The NB ERGONOMIC D9C features integrated cable management running through both arms. In addition, cables are routed neatly inside the arm structure from monitor to base. As a result, your desk stays clean and clutter-free regardless of your cable setup.
Technical Specifications
| Model | NB ERGONOMIC D9C |
| Configuration | Dual Arm — Single Shared Base |
| Screen Size (per arm) | 27–50 Inches (Flat / Ultrawide / Curved) |
| Load Capacity (per arm) | 2–15KG |
| Tilt (per arm) | ±90° |
| Swivel (per arm) | ±90° |
| Rotation (per arm) | 360° |
| Max Height | 583mm (20.95″) |
| Max Arm Extension (per arm) | 635mm (25″) |
| Max VESA-to-VESA Spread | 946mm (37.24″) |
| Arm Angle Range | ±40° |
| VESA Compatibility | 75×75mm / 100×100mm |
| Spring Type | Mechanical Spring (independent per arm) |
| Cable Management | Integrated — through both arms |
| Installation | C-Clamp |
| Configurations Supported | Side-by-side (27–40″) / Wide side-by-side (27–49″) / Vertically stacked (27–50″) |
Frequently Asked Questions
Can I use two different sized monitors on the NB D9C?
Yes. Each arm is independent and supports monitors from 27 to 50 inches up to 15KG. As a result, you can run two different sized monitors — for example a 27-inch and a 34-inch ultrawide — without any compatibility issues.
Can I stack monitors vertically with the NB D9C?
Yes. The D9C is specifically designed to support vertical stacking for monitors up to 50 inches — making it ideal for narrow desks or setups where horizontal space is limited. Furthermore, this configuration is great for coding, streaming, or reference workflows.
What is the maximum monitor size for side-by-side use?
For standard side-by-side, the D9C accommodates monitors up to 40 inches each. For a wider side-by-side arrangement, monitors up to 49 inches each are supported. Furthermore, vertically stacked configurations support monitors up to 50 inches per arm.
Why mechanical spring instead of gas spring for heavy monitors?
Gas springs use pressurized gas — however, over time gas can leak, causing gradual loss of holding strength. In contrast, the D9C’s mechanical spring system does not degrade over time. As a result, both arms maintain consistent holding force for heavy large-screen monitors across years of daily use.
Does each arm adjust independently on the NB D9C?
Yes. Each arm has its own mechanical spring and operates completely independently. As a result, you can set each screen to a different height, angle, tilt, and orientation without affecting the other arm.
What is the price of NB ERGONOMIC D9C Dual Monitor Arm in Nepal?
The price of NB ERGONOMIC D9C Dual Monitor Arm — 27–50″ is NPR 29,999 only. You can purchase NB ERGONOMIC D9C Dual Monitor Arm — 27–50″ from Backseatgaming.co with 1 year official warranty.
| Weight | 8 kg |
|---|
Technical Specifications
| Model | NB ERGONOMIC D9C |
| Configuration | Dual Arm — Single Shared Base |
| Screen Size (per arm) | 27–50 Inches (Flat / Ultrawide / Curved) |
| Load Capacity (per arm) | 2–15KG |
| Tilt (per arm) | ±90° |
| Swivel (per arm) | ±90° |
| Rotation (per arm) | 360° |
| Max Height | 583mm (20.95″) |
| Max Arm Extension (per arm) | 635mm (25″) |
| Max VESA-to-VESA Spread | 946mm (37.24″) |
| Arm Angle Range | ±40° |
| VESA Compatibility | 75×75mm / 100×100mm |
| Spring Type | Mechanical Spring (independent per arm) |
| Cable Management | Integrated — through both arms |
| Installation | C-Clamp |
| Configurations Supported | Side-by-side (27–40″) / Wide side-by-side (27–49″) / Vertically stacked (27–50″) |
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