Steelcase Series 1 vs Itoki ACT2

Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.

Steelcase

Steelcase Series 1

$549 – $750

Itoki

Itoki ACT2

¥132,240

≈ $830

Differences at a glance

Steelcase Series 1Itoki ACT2

Price: $549 – $750¥132,240
Seat height: 16.5–21.5 in (41.9-54.6 cm); 14.75–17.75 in (37.5-45.1 cm); 17.25–22 in (43.8-55.9 cm)450–565 mm (17.7-22.2 in)
Recline: Weight-activated synchro tilt; comfort dial with upright back lock, boost setting and weight-activated full recline20°
Arms: 4D arms (standard), height-adjustable arms or armlessAdjustable arms (4D link arms): height, depth, rotation angle
Headrest: Optional headrest; adjusts 3.25" verticallyAdjustable head support: 60 mm height, 30° front-back
Lumbar support: Adjustable lumbar is standard; fixed lumbar is available (3D Microknit Back only)Pelvis & lumbar support: 60 mm, 7 steps
Warranty: Limited Lifetime Warranty; 12-year, multi-shift, 24/7 parts and laborStructure 3 years (mechanisms and moving parts 2 years, exterior and surface finish 1 year)

From 5 Steelcase Series 1 and 6 Itoki ACT2 user reviews, most mentioned first. Green is liked, orange is a caution.

Which has a headrest?

Both: the Steelcase Series 1 as an option and the Itoki ACT2 as standard.

What do owners mention most?

Adjustability for the Steelcase Series 1, and design for the Itoki ACT2, based on review summaries.