Task chairs are often used by people who frequently need to switch between sitting and standing while working in warehouses, laboratories or medical practices.

Armrests support the forearms and therefore help promote ergonomic sitting. They can be adjustable in up to four ways: height, width, depth and angle (radial).

The term “breathable” is a colloquial expression for water vapour permeability. With breathable material, water vapour can escape from the inside to the outside.

“Abrasion-resistant” refers to all materials whose surface shows hardly any wear despite regular use.

If, for example, a backrest is lockable, it can be blocked or fixed in place using a lever.

The maximum load capacity of an office chair plays an important role, as it ensures safety and stability. As a rule, office chairs are designed for a maximum body weight of 100 to 120 kilograms. Only the XXL version can in some cases support up to 210 kilograms.

To protect your flooring from wear caused by chair castors and heavy use, we recommend using a chair mat. These are available for both hard floors and carpeted floors.

As Europe’s largest specialist mail-order retailer for office chairs, hjh OFFICE permanently keeps around 50,000 swivel chairs and desks in stock. We impress with an outstanding price-performance ratio, fast delivery and comprehensive advice.

The classic office chair is used for working at a computer workstation. It is usually available with a fabric or mesh fabric cover.

Executive chairs are usually slightly larger than a conventional office chair. In addition to fabric, covers in leather or faux leather are also often available.

All swivel chairs, lounge furniture and office furniture from our own brand hjh OFFICE are available directly from us, i.e. without intermediaries. And that means an unbeatable price.

Because mobility is essential in the office, office chairs are usually swivel chairs. They can be easily turned in any direction and allow the user to reach cabinets or storage areas positioned to the side. Swivel chairs also support the user’s motor skills.

DIN EN 1335 is a standard that defines the requirements office chairs must meet, including safety, strength and durability.

The science of ergonomics deals with the principles of human and automated work. The aim of ergonomics is to design working conditions and workflows in such a way that, on the one hand, optimal work results are achieved, while on the other hand the people involved in these processes do not become fatigued or even harmed. One of the main topics of ergonomics is therefore the user-friendliness of tools and, consequently, of office chairs as well.

A cantilever chair is a chair without back legs, whose seat surface flexes under a person’s weight and sinks slightly downwards.

In the view of most manufacturers, a footrest is not always necessary from an ergonomic perspective, but it can provide relief and additional comfort. Footrests are usually only found on office chairs without castors. Attaching one to a swivel chair is technically rather difficult to implement.

A gaming chair is a standard office chair designed to meet the needs of gamers. Originally, these chairs were developed for racing game players to give gamers the feeling of sitting in a sports car. That is why gaming chairs have a sporty design and are often known as racing chairs. They are generally comfortable and equipped with many adjustment options for long gaming sessions.

A gas lift is a pneumatic spring that uses high-pressure gas to provide the spring force. The advantages of a gas lift over a coil spring are the force, which is largely independent of the suspension travel, and the low space requirement.

Special chair castors should be fitted to an office chair for use on hard floor surfaces (such as tiles or parquet).

Lifting columns are used in electrically height-adjustable desks and raise the desktop.

Height adjustment can be either manual or electric. Office chairs are generally adjusted manually. Desks, on the other hand, can be height-adjustable either manually or electrically.

A hanging file, also known as a suspension file, is a filing solution that can store many documents. This makes a hanging file a simple and space-saving storage option.

A hanging file frame is a suspended unit in which many suspension files can be hung and stored. Hanging file frame drawers are available in many mobile pedestals from hjh OFFICE.

A cable management tray helps you keep your office tidy and avoid cable clutter at your desk. To keep cables as hidden as possible, cable trays can run either horizontally (along the underside at the rear edge of the desktop) or vertically (concealed in or attached to the frame).

"Child-friendly" refers to furniture that is specially adapted to children's body size and needs.

With the knee-tilt mechanism, the chair can also be locked at various angles, as with the classic tilt mechanism. The focus here is on an “open” mechanism in the front area, allowing the seat to tilt slightly further downwards. With the simple knee-tilt mechanism, the opening angle can only be opened or closed. Here too, adjustment is possible via the resistance pressure.

The soft-stop function with collision protection on electrically height-adjustable desks helps prevent cables from being put under too much tension or even pulling work materials off the desktop.

An important part of an office chair is the headrest or head support. It should adapt to the natural shape of the neck and be individually adjustable. If the headrest is adjustable, it can be ideally adapted to the user's height. In this way, both shorter and taller people can use the swivel office chair equally comfortably.

As the name suggests, faux leather is not real leather. It is a man-made material that is embossed to look like leather (imitation leather). It is easy to care for and can be cleaned easily by wiping. It is also less expensive to produce.

Medical professionals refer to the forward curvature of the human spine as lordosis. When used correctly, lumbar support promotes healthy sitting by providing targeted support for the lower back area. When correctly adjusted, the support is positioned around the iliac crest, approximately at belt level. Only in this area does the body provide a sufficiently large and stable surface to support you optimally when leaning back.

Leather is a natural material often used as upholstery for office chairs. Thanks to its high durability and tear resistance, leather is a very long-lasting material and is also more environmentally friendly to produce than cheaper leather alternatives.

Melamine is a colourless substance that is processed into amino resin, among other things. This material is used to bond decorative papers to carrier boards (e.g. MDF boards). Surfaces treated with melamine are particularly scratch-resistant and durable.

With office furniture featuring a memory function, certain seating or height settings can be saved and easily recalled.

Mesh fabric is a breathable textile mesh that, in addition to large-format advertising prints, is increasingly being used as upholstery for office chairs.

An office chair with a deep and wide bucket seat ensures comfortable seating even over longer periods.

Neck supports should be adjusted to neck height so that they can help relieve strain on the neck. When buying an office chair, you should make sure the support is height-adjustable.

This function does not respond to leaning back. Its purpose is to adjust the tilt angle of the seat to suit the user's physique. A correctly adjusted tilt angle can help prevent poor posture during long periods of sitting.

Chairs with mesh upholstery usually feel a little firmer than upholstered fabric chairs. They also allow better air circulation and therefore feel fresher than fabric covers.

Nylon is a highly tear-resistant synthetic fibre from the family of synthetic polymers, used primarily in the manufacture of textiles.

Many filing cabinets and sideboards are classified by file heights (FH), which define the distance between two shelves. One file height measures 360 mm and corresponds to the height of a standard DIN A4 file. The file height of a filing cabinet indicates how many files can be stored one above the other.

The permanent contact mechanism features a movable backrest without changing the position of the seat. This allows the user to switch between an upright and a reclined sitting posture depending on the task. This improves the supply of nutrients to the intervertebral discs. The backrest follows the body's movements and supports the user in returning from a reclined to an upright posture.

The padding of an office chair is responsible for seating comfort and is especially important in everyday office use. You can choose between the thick padding of an executive chair or an office chair with a mesh covering. When sitting down, the seat should provide slight cushioning to minimise impact on the spine.

As with the permanent contact mechanism, the backrest adapts to the user. The counterpressure of the backrest can be adjusted continuously and locked in various positions using a handwheel or rotary knob. To ensure an ergonomically correct angle between the seat and backrest, the seat tilts by a few degrees at the same time. This mechanism is mostly used in high-quality office chairs.

A tambour door runs from left to right or vice versa, depending on where it closes, and is often found on office furniture such as filing cabinets and sideboards. The shutter, which consists of individual interconnected slats, runs in guide rails and is rolled up on one side when opened. The advantage of tambour doors is that they save space, as no hinged doors protrude into the room.

Office chairs are usually supplied with castors for carpeted floors. As these are harder, they can scratch floors such as parquet or laminate. It is therefore recommended to purchase hard floor castors for these surfaces.

In principle, both hard floor castors and carpet castors consist of a core and a tread. The core is identical in both models. Only the tread differs fundamentally. Hard floor castors have a soft tread so as not to scratch surfaces such as laminate, tiles or parquet. Carpet castors are significantly harder and are therefore only suitable for soft floors such as carpet or fitted carpeting.

A mobile pedestal is a piece of office furniture that stands under or beside the desk, is movable thanks to its castors and is used to store office supplies. Many mobile pedestal models feature a stationery drawer, drawers or a hanging file drawer. The drawers of branded mobile pedestals usually have an extension stop and are lockable.

When office chair castors wear out over time, the castor pin diameter makes it easy to find a suitable replacement. The castor pin is the small rod used to attach the castor to the base of the office chair.

A tambour cabinet is a storage unit with a tambour door (horizontal tambour door or vertical tambour door) at the front. Tambour cabinets are available both as filing cabinets and as sideboards in various sizes.

An important component of the office chair is the backrest. It should adapt to the natural shape of the spine and be individually adjustable. If the backrest is adjustable, it can be ideally adapted to the user's height. This allows both shorter and taller people to use the swivel office chair equally well.

Acoustic screens are often used, especially in open-plan offices and call centres. These partitions are made from a special material that absorbs sound and noise, helping to improve room acoustics.

These are a unit like metres or kilograms; they describe the result of the “Martindale test”, which is named after its inventor. The higher the number of cycles, the more resistant the fabric is to abrasion and wear.

A snap lock allows children's desks to be adjusted safely and easily. This means the children's desk can grow with the child over many years.

Office chairs are divided into two categories: those with a recommended sitting time of around 4 hours a day for private use or use in a home office, and around 8 hours a day for professional offices and daily office work.

The seat should be height-adjustable. Most desk chair models have a seat width of between 40 and 48 centimetres. XXL office chairs have a slightly wider seat.

This means the chair only rolls when under load; when unloaded, the castors brake to prevent unintentional rolling away.

This allows the chair height to be adjusted to the individual height of the user.

The seat tilt function allows the seat of the office chair to be angled slightly forwards. The slightly forward-sloping seat counteracts the pelvis tilting backwards and, thanks to the larger angle between the upper body and thighs, relieves strain on the entire body.

This function affects not only seating comfort, but also blood circulation in the lower limbs. Everyone has different leg lengths – which is why the seat depth of a good office chair should be individually adjustable. It is important that the backs of the user's knees do not come into contact with the front edge of the seat. With the correct seat depth, the front edge lifts when the user leans back in the chair, and the feet remain in contact with the floor.

Standing aids provide comfortable support for alternating between standing and sitting. Our standing stools/standing chairs can significantly relieve strain on the musculoskeletal and support system.

Chairs with a fabric cover are always padded and therefore offer a soft seating feel. As the padding traps warmth on all sides, fabric covers provide a warmer seating experience.

The synchronous mechanism is often also referred to as a point synchronous mechanism. With the synchronous mechanism, the tilt of the backrest is linked to the tilt of the seat. When leaning back, the tilt of the seat changes at the same time, moving slightly backwards. The ratio of the change in tilt between seat and backrest is 1:3. This ensures that the support point selected for the pelvis remains unchanged in every position. This promotes ergonomic sitting.
Another important advantage is the absence of the “shirt-pull effect”: with other mechanisms, the changing seat angle can cause outer clothing to shift slightly. With the synchronous mechanism, everything stays in place.

Carpet floor casters are made of a uniform hard plastic. They are larger than hard floor casters so that they do not sink into the carpet as easily.

This is an insert for a drawer with pre-formed compartments for pens and other office supplies.

With the tilt mechanism, the backrest can be moved backwards, while the seat remains at the same angle. As a rule, the position can be locked using a lever. The tilt mechanism is the simplest mechanism for adjusting the inclination of the backrest.
A special version is the so-called Kniematic, also known as a knee-tilt mechanism. Here, the pivot point is located in the front area of the seat, so that when leaning back, the rear part of the seat is lowered.

Central locking is mainly used for mobile pedestals, stationary pedestals and filing cabinets with several drawers. As the name suggests, it locks all drawers centrally with a single lock. Individual drawers on the pedestals do not need to be locked separately, which means only one key is required.