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Steelcase

Steelcase Series 1 Work Chair Office Chair - Concord, Hard Floor Casters

Mesh back
300 lb capacity
Seat depth adjustment

$590.72

In stock on Amazon.com

Specs verified August 2026

Amazon.com data updated October 13, 2026, 2:34 pm ET. Price and availability are accurate as of the time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply.

Ergo Score Breakdown

Ergo Score: 45/100

Adjustability 15/40

Armrests3/101D armrests: 3/10

Seat height4/6adjustable: 4/6

Seat depth5/5seat depth adjustment: 5/5

Lumbar adjustment0/7Not listed by the seller

Recline0/2Not listed by the seller

Tilt lock0/3Not listed by the seller

Tilt tension3/3tilt tension: 3/3

Advanced tilt0/4Not listed by the seller

Support 12/30

Lumbar support8/12lumbar support: 8/12

Upper back support0/4Not listed by the seller

Headrest adjustment0/2Not listed by the seller

Cushion0/5Not listed by the seller

Seat edge0/3Not listed by the seller

Breathable back4/4mesh back: 4/4

Build 18/30

Warranty9/912-year warranty: 9/9

Weight capacity6/6300 lb capacity: 6/6

Certifications0/5Not listed by the seller

Base0/3Not listed by the seller

Gas lift0/2Not listed by the seller

Owner rating3/54.4 stars from 242 reviews: 3/5

Comfort Index

Comfort Index: 37/100

Seat cushionNot listed by the seller

Cushion thicknessNot listed by the seller

ReclineNot listed by the seller

Breathable back15/15

HeadrestNot listed by the seller

Armrests10/10

Owner rating12/25

Specifications

Seat height range	Not listed by the seller
Seat width	Not listed by the seller
Seat depth	Not listed by the seller
Seat depth adjustable	Yes
Seat cushion	Not listed by the seller
Cushion thickness	Not listed by the seller
Back material	Mesh
Backrest height	Not listed by the seller
Backrest width	Not listed by the seller
Armrests	1D (height only)
Lumbar support	Yes
Lumbar adjustments	Not listed by the seller
Headrest	Not listed by the seller
Max recline	Not listed by the seller
Tilt mechanism	Not listed by the seller
Base material	Not listed by the seller
Casters	Hard floor
Gas lift	Not listed by the seller
Weight capacity	300 lb
Chair weight	Not listed by the seller
Overall height	Not listed by the seller
Warranty	12 years
Certifications	Not listed by the seller

Mesh backHeight-adjustable armsSeat depth adjustmentTilt tensionHard-floor casters

What We Like

Owners rate it 4.4 across 242 reviews, enough reviews for the rating to carry real weight.
The build sub-score of 18 is the second highest in its category, supported by a 12-year warranty.
A mesh back, an adjustable seat depth and adjustable tilt tension come together on a chair with a footprint of 23.5 by 21 inches.

Watch Out For

The 300 lb rating is toward the lower end of its category, which matters for larger users.
The listing states height adjustment only for the arms, so it does not say whether they also move in width, depth or pivot.
The listing confirms lumbar support but does not state its type or how it adjusts, and it does not state a seat height range or a recline angle.

At a Glance

Steelcase's Series One Work Chair in Concord is rated 4.4 across 242 reviews and states a mesh back, height-adjustable arms, adjustable seat depth and a 12-year warranty.

Who This Chair Is For

Buyers who want a mesh back on a Steelcase and prefer to lean on a large body of owner reviews.
Anyone who wants the footprint spelled out: the listing gives 23.5 by 21 inches and a maximum height of 36.5 inches.

Who Should Look Elsewhere

Users who need more than a 300 lb weight rating.
Shoppers who want a headrest, which the listing does not state, or arms with more than height adjustment, which the listing does not state either.

A mesh back and a Connect fabric seat on the Series One in Concord

The back upholstery is listed as 100% polyester mesh, and the seat as 100% polyester Connect fabric. The arms adjust in height, the seat depth is adjustable, and tilt tension can be set. The gas lift is described as pneumatic seat height adjustment. The listing does not state a tilt mechanism type.