Search  for anything...

Genuine Herman Miller Aeron Chair Replacement Seat Pan – Size B (Medium) | Carbon Mesh with Graphite Frame

  • Based on 12 reviews
Condition: New
Checking for the best price...
$290.46 Why this price?
New Year Deal · 9% off was $320.46

Buy Now, Pay Later


As low as $48.41 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: Only 5 left in stock, order soon!
Fulfilled by File Bar Factory

Arrives Feb 2 – Feb 4
Order within 21 hours and 30 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Features

  • Authentic Herman Miller Part Ensure seamless compatibility and maintain the original quality of your Aeron chair with this genuine replacement seat pan.
  • Designed for Size B (Medium) Chairs Specifically crafted to fit Herman Miller Classic Aeron Size B chairs, providing a perfect match for medium frames.
  • Premium Mesh Material Features breathable Carbon Mesh that promotes airflow, enhancing comfort during extended periods of use.
  • Durable Graphite Frame Built with a sturdy Graphite Frame to ensure long-lasting support and maintain the chair's structural integrity.
  • Easy Installation with Included Instructions Comes with clear directions, allowing for a hassle-free replacement process to get your chair back in action quickly.

Description

Investing in this genuine replacement seat pan not only restores the functionality of your Aeron chair but also extends its lifespan, offering you continued comfort and support. Whether you're working from home or in the office, ensure your seating meets the highest standards with this authentic Herman Miller part. Made in USA Key Features: Perfect Compatibility: Tailored exclusively for Herman Miller Classic Aeron Size B chairs, ensuring a seamless fit and preserving the chair's original design and functionality.​ Breathable Mesh: The Carbon-colored Mesh promotes optimal airflow, keeping you cool and comfortable even during long hours of use.​ Sturdy Graphite Frame: The robust Graphite Frame provides exceptional durability, supporting your posture and enhancing the chair's longevity.​ User-Friendly Installation: With the included step-by-step instructions, replacing your old seat pan is straightforward, allowing you to enjoy your upgraded chair in no time.​ Investing in this genuine replacement seat pan not only restores the functionality of your Aeron chair but also extends its lifespan, offering you continued comfort and support. Whether you're working from home or in the office, ensure your seating meets the highest standards with this authentic Herman Miller part.

Brand: File Bar Factory


Color: Carbon Black Mesh, Graphite Frame


Orientation: Front


Material: Mesh


Vehicle Service Type: Car


Brand: ‎File Bar Factory


Color: ‎Carbon Black Mesh, Graphite Frame


Orientation: ‎Front


Material: ‎Mesh


Vehicle Service Type: ‎Car


Fit Type: ‎Vehicle Specific Fit


Item Weight: ‎7 Pounds


Automotive Fit Type: ‎Vehicle Specific Fit


Manufacturer: ‎File Bar Factory


Model: ‎Herman Miller Aeron Classic Size B Replacement Seat Pan


Item Weight: ‎7 pounds


Item model number: ‎241724-G1


Manufacturer Part Number: ‎AeronSeatPan


Date First Available: January 24, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Feb 2 – Feb 4

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Perfect fit / replacement.
Perfect fit! priced well and packaged well.
Reviewed in the United States on July 28, 2025 by Dug

  • Perfect Fit
Fits perfectly, and appears to be a genuine Herman Miller product. Someone mentioned that it doesn't come with instructions, but there are plenty of YouTube videos to show you how to change it out, and it doesn't take more than 15 minutes.
Reviewed in the United States on September 6, 2025 by John W

  • I'm pretty sure this is OEM Herman Miller -- it's EXACTLY like my original
This was a little tricky for someone who doesn't use tools -- it did not include any tools and required a 6mm hex key and a T25 star bit -- not something the average person has laying around their house. Also my chair had a T25 star bit but the instructions say it should be a 4mm hex bit -- so there were obviously a couple of versions. My chair is about 15 years old. It took about 30 minutes, but the next time I do this it will probably take 15 min. Expensive, but absolutely identical to my original seat so well worth it. ... show more
Reviewed in the United States on August 9, 2023 by Long Beach Native

  • Perfect fit
Direct replacement, perfect fit, fixed my absolute favoritest chair in the whole world! Thanks!
Reviewed in the United States on November 9, 2023 by rls

  • Nice to replace seat on expensive chair
Good replacement for seat section of expensive office chair . Good instructions . The hardest part was getting the old seat.off
Reviewed in the United States on September 4, 2023 by jdsfx

  • I fixed my chair!
I have to admit, I was worried that either the size or color wouldn't be a match, or that the quality would be an issue. The seat showed up fairly quickly, well packed, in perfect condition, with instructions. I was able to install it in only a few minutes, despite putting the support arms on wrong the first time. And now my chair is completely functional again. The color is a match. It's great! ... show more
Reviewed in the United States on June 22, 2023 by Peter S. Conrad

  • Excellent
Easy to install and restored the chair. Really impressed with how these chairs are made to be fixed. This one was very old.
Reviewed in the United States on August 29, 2023 by J. H. Jansen

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...