Office chair Topstar PI990BC0 with 600 mm back height, seat height 430–510 mm

The Topstar PI990BC0 office chair with a 600 mm back height and adjustable seat height from 430 to 510 mm is designed for daily office use. It provides a supportive backrest and straightforward height adjustment to accommodate different users and desk setups. The chair is intended for tasks that require medium-duration sitting and general desk work in offices, meeting rooms and home offices.

Advantages

This office chair offers a tall 600 mm backrest to support the upper and lower back, combined with a seat height range of 430–510 mm for ergonomic alignment with a work surface. The design focuses on functional comfort with simple adjustment controls, a stable base for reliable support and proportions suitable for a variety of body types. Materials are chosen for everyday durability and easy maintenance.

Suitable for

• General desk work in offices and home workspaces
• Meeting rooms and conference seating
• Tasks requiring adjustable seat height to match desks or tables
• Users seeking basic ergonomic support for extended sitting

Key specifications

• Backrest height: 600 mm
• Seat height range: 430–510 mm
• Chair type: office swivel chair
• Adjustment: pneumatic height adjustment
• Intended use: daily office and home office environments

How to use

Adjust the seat height using the pneumatic lever so your feet rest flat on the floor and your thighs are approximately horizontal. Position the backrest to support the lumbar region; if needed, sit slightly back to engage the backrest fully. Use the chair for standard desk activities, ensuring the work surface and monitor height are set to reduce forward leaning. Regularly stand up and stretch during long periods of sitting.

Usage recommendations

For optimal comfort, pair the chair with a desk that allows for the recommended seat height range and arrange the monitor so the top of the screen is at or slightly below eye level. Clean upholstery and frame surfaces with a soft cloth and manufacturer-approved cleaning agents to maintain appearance and function.