1. Introduction
This manual provides comprehensive instructions for the assembly, operation, and maintenance of your Steelcase Series 1 Office Chair. Designed for ergonomic support and productivity, this chair features weight-activated controls, back and arm support, and is built for easy assembly.
- Ergonomic Design: Provides essential ergonomics and quality with space efficiency and weight-activated controls.
- Customizable: Offers optional 4-dimensional arm support and an adjustable headrest, along with additional back support.
- Durable: Features flexible edges and adaptive bolstering in the forearm for a pressure-free sit.
- Easy Assembly: Can be assembled in under 2 minutes without tools.

Product Overview Video
Video 1: An overview of the Steelcase Series 1 Work Office Chair in Nickel, demonstrating its design and features.
2. Setup and Assembly
The Steelcase Series 1 chair is designed for quick and tool-free assembly. Follow these steps to set up your chair.
Assembly Instructions Video
Video 2: Step-by-step guide for assembling the Steelcase Series 1 Chair. This video demonstrates how to connect the base, cylinder, seat, and backrest components.
Video 3: An alternative assembly guide for the Steelcase Series 1 Chair, providing visual instructions for quick setup.
Video 3: An alternative assembly guide for the Steelcase Series 1 Chair, providing visual instructions for quick setup.
Important Assembly Note:
Always follow the assembly instructions carefully to ensure the chair is assembled correctly and safely. Failure to do so may result in instability or injury.
3. Operating Your Chair (Adjustments)
Your Steelcase Series 1 chair offers various adjustments to customize your seating experience for optimal comfort and support.
Adjustment Guide Video
Video 4: This video demonstrates how to adjust various features of the Steelcase Series 1 chair, including seat height, seat depth, armrests, and lumbar support.
Key Adjustments:
- Seat Height: Use the lever located under the right side of the seat to raise or lower the chair. Ensure your feet are flat on the floor and thighs parallel to the ground.
- Seat Depth: Adjust the seat forward or backward to ensure 2-3 inches of space between the seat edge and the back of your knees.
- Armrests: The 4-dimensional armrests can be adjusted for height, width, pivot, and depth. Press the button on the armrest to adjust height. Grasp the arm caps to slide them for width, pivot, and depth.
- Recline and Tension: The chair features weight-activated controls. Use the comfort dial to adjust back tension and recline. There are 3 reclining positions.
- Lumbar Support: The adjustable lumbar support can be moved up or down to fit the small of your back, providing additional support.


4. Maintenance
Proper care ensures the longevity and performance of your Steelcase Series 1 Office Chair.
- Product Care Instructions: Spot Wash. For specific cleaning instructions, refer to the fabric care guide provided with your chair or visit the Steelcase website.
- Regularly check all screws and connections to ensure they are secure.
- Clean casters periodically to prevent debris buildup that could hinder movement.
5. Troubleshooting
If you encounter any issues with your Steelcase Series 1 chair, consider the following common solutions:
- Chair not adjusting height: Ensure the height adjustment lever is fully engaged and that you are lifting your weight off the seat when raising, or applying weight when lowering.
- Armrests are loose: Check for any visible screws or locking mechanisms on the armrests and tighten them if necessary.
- Chair squeaks or creaks: Apply a small amount of silicone-based lubricant to moving parts, especially around the base and tilt mechanism.
- Casters not rolling smoothly: Clean any hair or debris from the casters. If issues persist, consider replacing the casters.
For persistent issues, please contact Steelcase customer support.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | Steelcase |
| Model Name | Series 1 work chair |
| Item Model Number | 435A00-5T20-5S24-6205-4ARM-LUM-CC |
| Color | Nickel |
| Product Dimensions | 31"D x 28.5"W x 16"H |
| Item Weight | 29 pounds |
| Maximum Weight Recommendation | 300 Pounds |
| Material | Foam (Fill Material) |
| Back Style | Open Back |
| Leg Style | Wheels (Carpet Casters) |
| Reclining Position Count | 3 |
| Assembly Required | Yes |
7. Warranty and Support
For detailed warranty information, please refer to the documentation included with your product or visit the official Steelcase website. Steelcase products are thoroughly tested to meet strict commercial quality standards.
For customer support, product registration, or to explore other Steelcase products, please visit the Steelcase Brand Store.





