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Office Logix Shop  |  SKU: HM-COSM-MB-GRA

Mid-Back Cosm Task Chair - Fully Loaded (Open Box)

$1,249.00
Shipping calculated at checkout.


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We supply the Mid-Back Cosm Task Chair - Fully Loaded (Open Box) across the USA, supporting organizations nationwide with exclusive wholesale pricing, volume discounts, and simplified tax-exempt purchasing.

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Description

Herman Miller Cosm · Mid-back · Open box

Herman Miller Cosm Mid-Back Task Chair, Fully Loaded, Open Box

An open-box Herman Miller Cosm in the mid-back height, which supports you up to the shoulder-blade region, fully loaded and finished in one color from top to bottom. The Auto-Harmonic tilt balances your recline on its own, and the breathable Intercept suspension stays temperature-neutral through long days.

At a glance
Model Herman Miller Cosm, mid back, fully loaded
Warranty 2-year mechanical warranty
Color Graphite
Condition Open box
Arms Height-adjustable
Style Dipped in color: one uniform hue from top to bottom
Tilt Auto-Harmonic, responding to your movement with no adjustment needed
Suspension Intercept, breathable and temperature-neutral
Shipping Free within the contiguous US

Support that stays out of your way

Designed by Studio 7.5, the Cosm uses a strong but flexible frame that barely interferes with how your upper body moves, so you can reach, turn and lean without the chair pushing back. The mid-back height is the everyday sweet spot: more support than the low back, a lighter look than the high back.

Dimensions

Measurement Cosm mid back
Overall height 39" to 45½"
Overall width 29"
Overall depth 26¾"
Seat height 14¾" to 21⅜"
Seat width 20.5"
Seat depth 15.9"
Arm height, from seat (adjustable arms) 7.3" to 11.7"

Herman Miller Cosm mid-back specifications.

Open box from OfficeLogixShop Checked by our technical team before it ships
Since 2015 Herman Miller seating specialists in Ohio
Visit us Lewis Center showroom, north of Columbus
Price

Herman Miller Cosm Mid Back price vs new

A fully loaded mid-back Herman Miller Cosm, open box, for under $1,300.

Our pricefrom $1,249
New Cosm Mid Backfrom $1,660
You save$41124% less than new

The new price shown is Herman Miller's starting price for a Cosm Mid Back, with fixed arms. This open-box chair has the height-adjustable arms, which cost more new, and we check it for any issues before it ships.

Set the arm height

Fully loaded Cosm: arm adjustment at your desk

Herman Miller Cosm mid-back chair, straight-on front view
Front view with both arm pads and the seat visible.
Herman Miller Cosm mid-back chair, rear frame and caster base
Rear view showing the central back support and wheeled base.

On this fully loaded Cosm, the arms adjust in height. Press the lever on the outer arm post to release them, then move the pad to the height you need. The range, 7.3" to 11.7", is measured from the seat, so you can check it against your desk.

Design

Cosm mid back: a functional sculpture you forget you are sitting in

Herman Miller Cosm mid back in Graphite seen from the side, with height-adjustable arms
Side view: one sweep of mesh runs from the seat up the mid-height back, and each arm rises on its own adjustable post.
Herman Miller Cosm mid back in Graphite, front view from slightly above
From the front: the Y-shaped spine shows through the mesh, and the frame and base share one Graphite finish.

The mid-back Cosm is not just a piece of furniture but a functional sculpture, where support, looks and function come together as one. Its design adapts instantly to your body, movement and posture, for natural balance and comprehensive support, so you soon forget you are even sitting. One Graphite hue from top to bottom adds a touch of elegance and style to any space, from a home office to a conference room.

This one comes fully equipped, with the premium height-adjustable arms. It redefines comfort at work with a sleek, modern design: a sitting experience that transcends the ordinary.

Back heights

Cosm low, mid or high back: which height do you need?

Herman Miller builds every Cosm on the same seat, suspension and Auto-Harmonic tilt; only the back height changes.

Back heightSupportNew, from (Herman Miller)At OfficeLogixShop
Low backCasual movement; ends below the shoulder blades$1,345Refurbished low back
Mid backUp to the shoulder-blade region$1,660This chair: open box, fully loaded
High backTotal support, the full height of the back$1,925Not stocked
New prices are Herman Miller's starting prices for each height, with fixed arms in Graphite.
Before choosing

Buying an open-box Cosm mid-back chair

Which features make this mid-back Cosm fully loaded?

It comes with height-adjustable arms, the feature that makes it fully loaded. You can also raise or lower the seat, and the Auto-Harmonic tilt sets the recline for you.

What does open box mean for this Cosm chair?

For this Herman Miller Cosm, open box means a lightly used chair that we check for any issues before it ships. A 2-year mechanical warranty covers this open-box Cosm.

What recognition has the Cosm chair received?

TIME included Cosm in its 2019 selection of 100 Best Inventions. That year, the chair also earned the highest Red Dot distinction for office chairs, Best of the Best.

How does the mid-back Cosm compare with the high back?

Choose the mid-back profile for support around the shoulder blades and a visually lighter chair than the high-back version.

Is there a more casual Cosm option?

For a more casual seat with a lower back, consider the Cosm low-back chair. It is the lower-priced alternative in our Cosm range; choose this mid-back version when shoulder-blade support is your priority.

Does the mid-back Cosm have adjustable lumbar support?

There is no lumbar knob or pad. Herman Miller relies on the Intercept suspension instead: it shapes itself to each person's back from the seat up through the mid back and supports the spine as you move.

Who is the Cosm mid back sized for?

Herman Miller sizes the Cosm for people of roughly 5'0" to 6'3" and rates it to 350 lbs. Here the seat goes from 14¾" to 21⅜" high, and the arm pads can sit anywhere from 7.3" to 11.7" over it.

What color is this Cosm mid back?

Graphite, a dark charcoal gray. Like every dipped-in-color Cosm, it carries one hue from top to bottom.

Is there a mid-back Cosm stool?

Herman Miller does make one, for drafting-height work, alongside a low-back stool. We offer this mid back as a desk-height chair only; for a raised desk, look at our Leap V2 stool or Mirra 2 stool.

What shipping options are offered for this chair?

This mid-back Cosm ships free to addresses within the contiguous US. For destinations abroad, we offer international shipping at competitive rates calculated at checkout.

Lewis Center, Ohio

Arrange a visit to our Ohio showroom

You will find our showroom in Lewis Center, Ohio, north of Columbus. Contact us before making the trip.

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