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OM5 - Office Master Ergonomic Self Weighing Mid Back Task Chair
All fabric, arms and other options shown above are an example of customizations of the chair. Colors are an approximation.
Arms are sold separately.
The Office Master OM5 Evolved builds on the original OM5 with enhanced comfort and flexibility. It still features the signature self-weighing mechanism that adapts to a wide range of users without manual tension adjustments. New upgrades include a bi-lateral lumbar system for personalized back support, a tool-free removable seat for easy replacement, and 2.5 inches of seat depth adjustment. The OM5 Evolved delivers dynamic support, long-term comfort, and sleek style—at a price that’s hard to beat.
Features:
- Regular back
- Regular seat (with waterfall flex feature)
- OM5 series® body-activated motion
- Virtual pause/lock
- Polyflex with variable back resistance
- Weight Rating - 300 lbs.
Specifications:
| Model/Sku | Office Master OM5 |
| Overall Width | 27" |
| Overall Height | 37-42" |
| Back | 18"w x 21"h |
| Seat | 19.75"w x 17-18.5"d |
| Seat Height | 16-21" |
| Carton Weight | 64 pounds |
| Warranty | Lifetime Limited |
Chair measurements are approximate and are based on switching cylinder heights on otherwise the same chair, with the same base and casters. Arm dimensions are approximate as actual measurements will vary depending on a variety of factors: cushion contour(s), seat upholstery, memory foam, etc.
More information about OM5 Fabric and Arms selection is available on the OM5 Options Library page
Downloads / Info
- Assembly: Assembly_Instructions_OM5-Series.pdf
- Sales Tutorial: Brochure_OM5-Series.pdf
- Certificate: Certificate_OM5-Series.pdf
- Disassembly: Disassembly_Recycling_Instructions_OM5-Series.pdf
- General Warranty