OM5 - Office Master Ergonomic Self Weighing Mid Back Task Chair
All fabrics, arms, and other options shown are examples of available customizations. Fabric shown may not be available on all models — see product options for current selections. Colors are approximate. Arms 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:
Features:
- 21" Mid Back Polyflex
- Body-Activated Motion mechanism
- Polyflex with variable back resistance
- Virtual pause/lock
- Tilt Lock
- Field Replaceable Seat
- 350 lbs. Weight Capacity
- Seat Depth Adjustment
- Lifetime Limited Warranty
Model/Sku | Office Master OM5 |
Overall Width | 28″ |
Overall Height | 37-42″ |
Back | 18"w x 21"h |
Seat | 19.5″w x 17.5-19.75″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.
Downloads / Info
- Assembly: Assembly_Instructions_OM5-Series.pdf
- Certificate: Certificate_OM5-Series.pdf
- Disassembly: Disassembly_Recycling_Instructions_OM5-Series.pdf
- Sales: Sales_Tutorial_OM5-Series.pdf
- General Warranty