Duramont
Duramont Ergonomic Office Chair with Rollerblade Wheels - High Back Breathable Mesh Desk Chair, 4D Lumbar Support, Memory Foam Seat, Adjustable Headrest and Armrests, Reclines, Black
Very Good
In stock on Amazon.com
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Herman Miller
Herman Miller Aeron Executive Office Chair-Stainless Steel, Size B-Fully Adjustable Arms-lumbar Support Open Box
Fair
- 300 lb capacity
$699.00
In stock on Amazon.com
Check PriceSpecs verified October 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: 31/100
Adjustability 6/40
Armrests3/101D armrests: 3/10
Seat height0/6Not listed by the seller
Seat depth0/5Not listed by the seller
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 8/30
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 back0/4Not listed by the seller
Build 17/30
Warranty9/912-year warranty: 9/9
Weight capacity6/6300 lb capacity: 6/6
Certifications0/5Not listed by the seller
Base2/3steel base: 2/3
Gas lift0/2Not listed by the seller
Owner rating0/53.5 stars from 297 reviews: 0/5
Comfort Index
Comfort Index: 10/100
Seat cushionNot listed by the seller
Cushion thicknessNot listed by the seller
ReclineNot listed by the seller
Breathable backNot listed by the seller
HeadrestNot listed by the seller
Armrests10/10
Owner rating0/25
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 | Not listed by the seller |
| Seat cushion | Not listed by the seller |
| Cushion thickness | Not listed by the seller |
| Back material | Not listed by the seller |
| Backrest height | Not listed by the seller |
| Backrest width | Not listed by the seller |
| Armrests | 1D (height only) (from Amazon listing) |
| 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 | Steel |
| Casters | Not listed by the seller |
| Gas lift | Not listed by the seller |
| Weight capacity | 300 lb (from Amazon listing) |
| Chair weight | Not listed by the seller |
| Overall height | Not listed by the seller |
| Warranty | 12 years |
| Certifications | Not listed by the seller |
What We Like
- The 12-year warranty ties for second-longest among home-office chairs, behind only a 15-year term.
- A tilt tension control is listed.
Watch Out For
- It averages 3.5 from 297 reviews, the second-lowest rating among home-office chairs.
- Only two home-office chairs cost more, yet the Comfort Index of 10 is also second from the bottom, with cushion, thickness, recline, breathability, headrest and owner rating all contributing zero.
At a Glance
An open-box Aeron in Size B with arms the title calls fully adjustable and a stainless steel base; the listing says little about the seat.
Who This Chair Is For
- Buyers happy to accept open-box condition in exchange for the Aeron name.
- Shoppers who like a stainless steel base.
Who Should Look Elsewhere
- Buyers who want a new chair, since the title describes this one as Open Box.
- Shoppers who need a recline angle or a seat height range, since the listing does not state either.
The open-box Aeron's lumbar, tilt tension and seat depth in the listing
Lumbar support is stated without a type or any adjustment. A tilt tension setting is listed, but the tilt mechanism is not stated, and neither is a seat depth adjustment.
Alternatives to Consider
Why consider: Brings a headrest that adjusts in height and a lumbar that adjusts in depth, neither of which this listing states.
Haworth
Haworth Breck Office Chair - Ergonomic Desk Seat with Height-Adjustable Lumbar Support, Black Trim, and 4D-Arms (Coal)
Very GoodLimited data
In stock on Amazon.com
Why consider: Adjusts its seat depth and names a BIFMA certification, neither of which this listing states.
Frequently Asked Questions
Is this open-box Aeron the same as the Renewed Size B listing?
Both are Size B Aerons. The Renewed one states pivot adjustment on the arms and a 10-year warranty, while this one states height adjustment and a 12-year term.
Does the open-box Aeron list a seat width?
The listing does not state a seat width.
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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.