The Ergotron 45-509-216 LX Dual Stacking Arm, Tall Pole is a white dual-monitor desk mount designed for stacked display configurations and large screens. Its 22-inch (55.9 cm) tall pole provides additional vertical positioning flexibility, while the two articulated LX arms support a combined display load of up to 40 lb (18.1 kg).
Overview
The LX Dual Stacking Arm, Tall Pole provides independent positioning for two displays while keeping the monitors organized in a stacked arrangement. The tall pole accommodates displays up to 40 inches and provides a larger vertical mounting structure than standard LX dual-monitor configurations.
Dual-Display Support
The 45-509-216 supports two displays with a combined capacity of 14–40 lb (6.4–18.1 kg). Ergotron specifies a maximum display size of 40 inches. The actual supported display size can vary when the total load remains within the mount's rated capacity.
Tall-Pole Configuration
The defining feature of this model is its 22-inch (55.9 cm) tall pole. The additional pole height provides configuration flexibility for larger displays and vertically arranged monitor installations.
Adjustability
The LX arms provide 13 inches (33 cm) of lift, 75° of tilt adjustment, 360° of pan, and 360° of monitor rotation. The arms can extend up to 25 inches (64 cm), allowing the displays to be positioned at different viewing distances.
Key Features
- Supports two displays up to 40 inches.
- Provides 14–40 lb (6.4–18.1 kg) combined display capacity.
- Uses a 22-inch (55.9 cm) tall pole for additional configuration flexibility.
- Provides 13 inches (33 cm) of lift with 75° tilt and 360° pan and rotation.
- Supports VESA 75 x 75 mm and 100 x 100 mm mounting patterns.
VESA Compatibility
The 45-509-216 uses the VESA MIS-D mounting interface and supports 75 x 75 mm and 100 x 100 mm mounting patterns.
Desk Mounting
The mount includes a heavy-duty two-piece desk clamp base with dual clamping screws. It also includes a grommet mount plate and hardware for compatible desk installations.
Expansion Options
The LX platform can be expanded with a compatible LX Arm, Extension and Collar Kit to add a third or fourth display. The additional arm kit is an accessory and is not included with the 45-509-216.
Applications
The 45-509-216 is suited to workstations requiring two large displays in a vertically organized configuration. Its tall pole is particularly relevant when additional mounting height is required for larger screens.
DC Supplies Product Note
When planning a stacked installation, verify the combined monitor weight as well as the available vertical space. This exact model uses a 22-inch pole and is rated for up to 40 lb total display weight.
Specifications
| Specification | Details |
|---|
| Brand | Ergotron |
| Part Number / MPN | 45-509-216 |
| Product Type | LX Dual Stacking Arm, Tall Pole |
| Color | White |
| Display Configuration | Dual monitor |
| Maximum Display Size | Up to 40 inches |
| Combined Display Capacity | 14–40 lb (6.4–18.1 kg) |
| Number of Displays | 2 |
| Lift | 13 inches (33 cm) |
| Tilt | 75° |
| Pan | 360° |
| Rotation | 360° |
| VESA Standard | MIS-D |
| VESA Mounting Patterns | 75 x 75 mm and 100 x 100 mm |
| Maximum Extension | 25 inches (64 cm) |
| Pole Height | 22 inches (55.9 cm) |
| Mounting Type | Heavy-duty two-piece desk clamp and grommet mount plate |
| Product Weight | Approx. 19 lb (8.6 kg) |
| Warranty | 10 years |
| UPC | 0698833061581 |
Package Contents
The package includes two LX arms and extensions, a 22-inch pole, heavy-duty two-piece desk clamp base with dual screws, two pole collars, two caps, grommet mount plate and hardware, and monitor mounting hardware.
Frequently Asked Questions
How many monitors can the 45-509-216 support?
The LX Dual Stacking Arm supports two displays in its standard configuration.
What is the maximum display size?
Ergotron specifies displays up to 40 inches for this model.
What is the total weight capacity?
The specified combined display capacity is 14–40 lb (6.4–18.1 kg).
How tall is the pole?
The tall pole measures 22 inches (55.9 cm).
Can additional monitors be added?
Yes. A compatible LX Arm, Extension and Collar Kit can be used to add a third or fourth display. The additional arm kit is sold separately.
Which VESA patterns are supported?
The mount supports 75 x 75 mm and 100 x 100 mm VESA mounting patterns.
