Steelcase Series 1 vs SIHOO M56C
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
$364.01
lower starting price for SIHOO M56C than Steelcase Series 1 at the brand stores
Differences at a glance
Sources
- Understanding and Specifying Steelcase Series 1 Work Chairs (Seating Specification Guide, February 2024) ↗Checked Sep 29, 2026
- Sihoo M56C Ergonomic Office Chair - Full Back Support with Cotton Seat Cushion – Official US Sihoo Store ↗Checked Oct 13, 2026
- Steelcase Series 1 cut sheet (Item #25-0000121 02/25) ↗Checked Sep 29, 2026
- Steelcase Series 1 product page (steelcase.com) ↗Checked Sep 29, 2026
- US Steelcase Store (price) ↗Checked Sep 29, 2026
Steelcase Series 1SIHOO M56C
- Price
- $549 – $750$184.99
- Seat depth
- 15.5"D to 17.75"D (functional seat depth)17.1 in (≈ 43.4 cm)
- Load capacity
- 400 lb (181.4 kg); 300 lb (136.1 kg)300 lb (≈ 136 kg)
- Recline
- Weight-activated synchro tilt; comfort dial with upright back lock, boost setting and weight-activated full reclineMaximum tilt angle of 125° (reclining lock with 1 position)
- Arms
- 4D arms (standard), height-adjustable arms or armlessArmrests adjustable up and down
- Headrest
- Optional headrest; adjusts 3.25" verticallyHeadrest moves up and down and tilts
- Lumbar support
- Adjustable lumbar is standard; fixed lumbar is available (3D Microknit Back only)Ultra-wide dynamic lumbar support: a flexible elastic plate that moves with the backrest (no manual adjustment listed)
- Warranty
- Limited Lifetime Warranty; 12-year, multi-shift, 24/7 parts and labor3 years
Questions
Which is cheaper, the Steelcase Series 1 or the SIHOO M56C?
The SIHOO M56C is cheaper to start: $184.99 versus $549 for the Steelcase Series 1 at the brand stores (Sep 2026).
Which has a headrest?
Both: the Steelcase Series 1 as an option and the SIHOO M56C as standard.
