Maclean Keyboard Shelf/Tray, black, tray dimensions 66x30 cm, for mounting on an office chair, max. 5 kg, MC-139

Keyboard tray that attaches to a chair

KEYBOARD SHELF THAT MOUNTS TO AN OFFICE CHAIR – A COMFORTABLE WORKSPACE ALWAYS AT YOUR FINGERTIPS
The practical Maclean MC-139, which attaches to an office chair, is a functional solution for people who want to create a more comfortable, ergonomic, and flexible workspace without having to expand their desk. The product works well in a home office, at a computer station, in a studio, and in any space where saving space and the freedom to arrange computer accessories are important.
Because it mounts directly to the office chair’s column, the shelf is always close to the user. It allows you to conveniently position your keyboard, mouse, or other essential accessories in the optimal position, reducing the need to lean over the desk and improving the comfort of your daily work at the computer.
STABLE MOUNTING TO THE OFFICE CHAIR PILLAR WITH ADJUSTABLE MOUNTING HEIGHT
The MC-139 is designed for mounting on the column of an office chair or armchair. This solution creates a compact workstation that moves with the chair and remains within easy reach. This is particularly practical in cases of limited desk space, multi-tasking workstations, or situations where a traditional pull-out keyboard shelf cannot be installed.
Height adjustment allows you to tailor the shelf’s position to the user’s height, seat height, and individual work preferences. This enables you to set the surface at a height where your forearms rest naturally, making keyboard use more comfortable even during extended periods of computer work. This is an important ergonomic feature that helps better tailor the workstation to the user rather than forcing a single, rigid position.
The design creates an additional work surface next to the chair, allowing the keyboard to be positioned closer to the body and giving the user greater control over their working position. This is a convenient solution for people who work at a computer, play video games, operate technical workstations, or use a monitor placed on a desk.

TILT AND ROTATION ADJUSTMENTS FOR GREATER WORKING COMFORT
One of the most important advantages of the MC-139 shelf is its tilt and rotation adjustment capabilities. This makes it easy to adjust the tabletop to your sitting position, chair height, hand placement, and keyboard usage. These adjustments allow you to position the shelf so that typing is more comfortable and your wrists and forearms are in a more natural position.
The swivel feature enhances the product’s everyday functionality. You can position the shelf in front of you while working, and then move it away or rotate it when it’s not needed. This practical solution makes it easier to get up from your chair, change positions, and organize the space around your computer workstation.
LARGE 66x30 CM TOP WITH WRIST REST
The shelf’s top measures 66x30 cm, providing a comfortable workspace not only for a standard keyboard but also for a mouse, a mouse pad, a notebook, or other small accessories needed while working. The wide surface provides more freedom than classic narrow keyboard trays, which translates to greater comfort.
A surface of this size is ideal for office work, studying, using a multimedia computer, or gaming. It’s a good choice for people who need a stable and comfortable place for their keyboard but don’t want to take up extra space on their desk.
The included wrist rest enhances comfort while typing and during extended computer use. It provides practical support for your hands, helps reduce fatigue, and improves the comfort of using the keyboard. This is particularly important for people who spend many hours a day at the computer and expect their workspace to be not only functional but also better suited to their daily habits.

Specification:
- Manufacturer: Maclean
- Model: MC-139
- Color: black
- Frame material: powder-coated steel
- Tabletop material: particleboard
- Maximum load: 5 kg
- Tabletop dimensions: 66x30 cm
- Tabletop thickness: 18 mm
- Wrist rest length: 40 cm
- Tube height: 640 mm
- Tube length: 400 mm
- Tube diameter: 35 mm
- Arm length: 360 mm
- Diameter of the attachment to the chair/stool tube: 43 mm

Set contains:
- Maclean MC-139 Keyboard Shelf/Tray
- Mounting accessories
- Installation instructions
- Manufacturer's packaging

AN ERGONOMIC SOLUTION FOR SMALL OFFICES AND REMOTE WORK
A keyboard shelf that attaches to an office chair helps you better organize your workspace, especially where every centimeter of space counts. It can serve as an alternative to a traditional keyboard drawer, an additional side table, or a large computer desk. By attaching it to the chair, the user gains a mobile work surface that can be adjusted to their current needs.
The combination of adjustable mounting height, tilt, and rotation allows the shelf to be precisely positioned relative to the seated position. This enables you to create a more ergonomic workspace without having to replace your desk or purchase additional furniture. This solution is particularly useful in home offices, small rooms, studies, service stations, and anywhere else where the standard placement of a keyboard on a desk does not provide sufficient comfort.
VERSATILE DESIGN AND PRACTICAL APPLICATION
The black, minimalist design of the MC-139 shelf complements most office chairs and armchairs, as well as modern computer workstations. Its simple design gives the product an aesthetically pleasing look without visually dominating the office space. Once installed, it creates a functional side-and-front surface that enhances the comfort of using a computer.
The shelf can be used for more than just a keyboard. Depending on your needs, it also works well as a handy surface for a game controller, tablet, notebook, documents, small electronic devices, or other accessories you’ll want to keep close at hand while working.

- Mounts to the office chair’s column—the mount attaches directly to the chair’s column, keeping it close to the user and allowing it to move with the chair
- Height adjustment on the column – the shelf’s position can be adjusted to the user’s height, seat height, and individual working position
- Adjustable tabletop tilt – allows you to set the tray at a comfortable angle, which facilitates comfortable writing and helps you position your hands and forearms better
- Swivel function – allows you to position the shelf optimally while working and conveniently move it out of the way when not in use
- Large 66x30 cm work surface – provides space for a keyboard, mouse, mouse pad, notebook, or other computer accessories
- Wrist rest – increases comfort during extended typing sessions and provides practical support for your hands
- Saves desk space – the shelf helps organize your workspace and frees up desk space by keeping the keyboard and other accessories off the desk
- Ergonomic keyboard positioning – allows you to place the keyboard closer to your body, which can improve comfort and reduce the need to lean over the desk
- Practical use in home offices and workplaces – works well in small spaces, computer workstations, home offices, studios, and places where flexible work organization is important
- Versatile, minimalist design – the black finish complements most office chairs and modern computer workstations