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Herman Miller

Herman Miller Office Chair Size B | Fully Adjustable with All Features Included| Quick and Easy Assembly| Renewed| 10 Year Warranty| Hardwood Floor Roller Blade Style Wheels Included

2D arms
Adjustable lumbar

$645.00

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: 41/100

Adjustability 13/40

Armrests6/102D armrests: 6/10

Seat height4/6adjustable: 4/6

Seat depth0/5Not listed by the seller

Lumbar adjustment3/7lumbar adjustments: 3/7

Recline0/2Not listed by the seller

Tilt lock0/3Not listed by the seller

Tilt tension0/3Not listed by the seller

Advanced tilt0/4Not listed by the seller

Support 12/30

Lumbar support12/12lumbar support: 12/12

Upper back support0/4backrest 22 in: 0/4

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 16/30

Warranty9/910-year warranty: 9/9

Weight capacity0/6Not listed by the seller

Certifications4/5BIFMA: 4/5

Base3/3aluminum base: 3/3

Gas lift0/2Not listed by the seller

Owner rating0/5Not listed by the seller

Comfort Index

Comfort Index: 13/100

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 rating3/25

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	22 in
Backrest width	20 in
Armrests	2D adjustable
Lumbar support	Yes
Lumbar adjustments	Height
Headrest	Not listed by the seller
Max recline	Not listed by the seller
Tilt mechanism	Not listed by the seller
Base material	Aluminum
Casters	Rollerblade
Gas lift	Not listed by the seller
Weight capacity	Not listed by the seller
Chair weight	54 lb
Overall height	Not listed by the seller
Warranty	10 years
Certifications	BIFMA

RenewedMesh upholsteryHeight-adjustable lumbarAdjustable armsBIFMA certified

What We Like

A 10-year warranty on mechanical parts, a BIFMA mark and an aluminum base back the build.
The arms adjust in height and pivot, and the lumbar adjusts in height.

Watch Out For

The seat height range starts at 21 inches, one of the highest minimums published, so shorter sitters should check that their feet reach the floor.
The rating is 3.8 from 83 reviews, one of the lower ratings in its category.
The Comfort Index is 13, among the lowest in its category: the listing does not state a cushion, a recline angle or a headrest, and it gives the back material as aluminum, so the index has little to credit.

At a Glance

A renewed Herman Miller Aeron in Size B, with arms that adjust in height and pivot, a height-adjustable lumbar and back upholstery given as mesh. A weight capacity is not stated in the listing.

Who This Chair Is For

Buyers who want an Aeron frame from a renewed listing rather than a new one: the title marks this chair as Renewed.
Shoppers who want mesh upholstery on an aluminum frame: the listing gives the back upholstery as mesh and the base as aluminum.

Who Should Look Elsewhere

Buyers who want a stated weight capacity before they commit: the listing does not state one.
Anyone carrying the chair between floors, since the chair weight is listed at 54 lb, the third highest of any published chair that states one.

What a renewed Aeron Size B listing spells out

The arms adjust in height and pivot, and the lumbar adjusts in height. The listing gives the back material as aluminum with mesh upholstery, and the casters are described as roller blade style. The title calls the chair Fully Adjustable with All Features Included, while the spec details itemize the arm, lumbar and minimum seat height details; tilt tension, recline and seat depth controls are not stated.

Alternatives to Consider

Herman Miller

Herman Miller Aeron Executive Office Chair-Stainless Steel, Size B-Fully Adjustable Arms-lumbar Support Open Box

Fair

In stock on Amazon.com

$699.00Comfort Index 10/100

Why consider: Lists adjustable tilt tension and a 300 lb capacity alongside a 12-year warranty.

Crandall Office Furniture

Steelcase Leap V2 Office Chair - Remanufactured by Crandall Office - Ergonomic, Fully Adjustable, 12-Year Warranty, Black Fabric - Premium Work & Home Office Seating

FairLimited data

In stock on Amazon.com

$799.00Comfort Index 39/100

Why consider: Lists 4D arms where the renewed Aeron is classed 2D, with 194 reviews at 4.5 against 83 at 3.8; it is a remanufactured Steelcase Leap rather than an Aeron.

Frequently Asked Questions

Is this a new Aeron?

No. The title marks the chair as Renewed and gives its size as Size B.

What does the 10-year warranty cover?

The listing's warranty note reads 10 Year Warranty for all mechanical parts on the chair, under a Limited Warranty, and it does not say what other parts are covered.