---
product_id: 234779553
title: "Replacement Seat for Herman Miller Classic Aeron Size B Medium (Black Mesh)"
brand: "foamon"
price: "€ 466.21"
currency: EUR
in_stock: true
reviews_count: 8
category: "Foamon"
url: https://www.desertcart.fi/products/234779553-replacement-seat-for-herman-miller-classic-aeron-size-b-medium
store_origin: FI
region: Finland
---

# Perfect fit for Aeron Size B Fuss-free, tool-assisted install Breathable black mesh ventilation Replacement Seat for Herman Miller Classic Aeron Size B Medium (Black Mesh)

**Brand:** foamon
**Price:** € 466.21
**Availability:** ✅ In Stock

## Summary

> 🪑 Upgrade your throne, stay cool, and own your workspace vibe.

## Quick Answers

- **What is this?** Replacement Seat for Herman Miller Classic Aeron Size B Medium (Black Mesh) by foamon
- **How much does it cost?** € 466.21 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/234779553-replacement-seat-for-herman-miller-classic-aeron-size-b-medium)

## Best For

- foamon enthusiasts

## Why This Product

- Trusted foamon brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Reinforced heavy-duty nylon frame supports up to 300 lbs without cracking or sagging.
- • **Seamless Style Sync:** Graphite black mesh matches original Aeron aesthetics for a sleek, professional look.
- • **All-Day Cool Comfort:** Premium filament mesh ensures superior airflow to keep you fresh through marathon workdays.
- • **Effortless DIY Upgrade:** Comes with tools and manual for a quick 20-minute seat refresh—ditch the handyman.
- • **Tailored Precision Fit:** Exclusively designed for Herman Miller Aeron Size B—no compromises, no guesswork.

## Overview

This Replacement Seat is a genuine, ready-to-install part engineered exclusively for the Herman Miller Classic Aeron Size B chair. Featuring breathable black mesh fabric identical to the original, a reinforced nylon frame, and a precise 20.25" x 18" x 6" dimension, it offers durable comfort and effortless installation. Perfect for professionals seeking to extend the life and style of their iconic Aeron chair without the hassle of full replacement.

## Description

desertcart.com : Replacement Seat for Herman Miller Classic Aeron Size B Medium (Black Mesh) : Patio, Lawn & Garden

Review: Perfect seat replacement for my size B Aeron chair - I have an Aeron chair (size B) that I bought in the late 90s. A few years ago the seat started to tear. Not bad after 20+ years of almost daily use. I bought a replacement mesh which turned out to be a bad idea. It didn't quite fit and it wasn't made of the same stretch material as the original seat. Ok, lesson learned there. So I bought this and it was a perfect replacement. It's an entire new seat, not just the mesh. The mesh is the same stretchy material as the original. It looks identical to the original seat as far as I can tell. Replacing the seat was pretty easy. The instructions were good and it came with the tools needed. I think it took about 20 minutes and I was done. If you've made an investment in this chair, I think it's worth it to spend a little more getting this replacement seat so you have the official product. I'm writing this review 2.5 years later in Feb 2026 and the seat is still great. Zero problems, no regrets.
Review: Perfect Replacement – Feels Just Like the Original - This replacement seat for my Size B Aeron chair fit perfectly and matched the original in both comfort and quality. The mesh feels sturdy, supportive, and identical to what came with the chair originally. Installation was simple, and once it was on, I honestly couldn’t tell the difference. If you’re looking to refresh your chair without replacing the whole thing, this is the way to go. Solid product.

## Features

- ✅ Made to Fit Only Herman Miller Aeron Size B Chair
- ❌ Will NOT Fit Aeron Size C or Size A Chairs
- ❌ NOT Compatible with Aeron Remastered. Mirra 1 or Mirra 2
- Fuss-Free Installation - No need to call a handyman to put these chair seat replacements in place. This new Aeron chair seat comes with a manual that'll help you remove and replace your old seat.
- Ready To Use - With this new Replacement Seat, there's no need to assemble mesh, and foam required. The seat itself comes ready to install so you'll only need a few minutes to revamp your Herman Miller Classic Aeron desk chair.
- Fits Your Herman Miller Chair - Measuring 20.25 inch Width x 18 inch Depth x 6 inch Height, our Herman Miller Aeron replacement parts are designed to fit any Classic Aeron chair size B. Replace your old chair seat with great ease!
- Sit Comfortably - This seat is made of filament which offers fantastic ventilation, so you can stay cool all day. Our seat's black mesh fabric also matches the mesh of Herman Miller Aeron chairs.
- Tough & Durable - Our Aeron Seat Replacement parts feature a reinforced, heavy-duty frame to ensure that it won't break, crack, or get damaged easily. Sit on your new cushion without worries!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08KGWXM9N |
| Additional Features | Durable |
| Age Range Description | Adult |
| Arm Style | Armless |
| Back Style | Solid Back |
| Best Sellers Rank | #61,615 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #269 in Lawn Mower Accessories #722 in Home Office Desk Chairs |
| Brand | FOAMON |
| Brand Name | FOAMON |
| Chair Backrest Width | 20.25 Inches |
| Color | Graphite |
| Cushion Style | Boxed Edge |
| Customer Reviews | 4.4 out of 5 stars 217 Reviews |
| Fill Material | Foam |
| Finish Types | Powder Coated |
| Frame Material Type | Nylon |
| Furniture Base Movement | Swivel |
| Furniture Finish | Graphite |
| Included Components | User Manual |
| Indoor Outdoor Usage | Indoor |
| Is Customizable? | No |
| Is Electric | No |
| Is Foldable | No |
| Item Depth | 18 inches |
| Item Dimensions | 18 x 20.25 x 6 inches |
| Item Dimensions D x W x H | 18"D x 20.25"W x 6"H |
| Item Weight | 4.6 Pounds |
| Leg Style | Pedestal |
| Manufacturer | FoamOn |
| Material | Textile |
| Material Type | Textile |
| Maximum Weight Recommendation | 300 Pounds |
| Model Name | Aeron Size B |
| Model Number | Aeron Size B |
| Pattern | Solid |
| Product Care Instructions | Wipe Clean |
| Product Dimensions | 18"D x 20.25"W x 6"H |
| Reclining Position Count | 1 |
| Recommended Uses For Product | Office |
| Required Assembly | Yes |
| Room Type | Office |
| Seat Depth | 18 inches |
| Seat Material | Fabric |
| Shape | Rectangular Prism |
| Size | SIZE B MEDIUM |
| Style Name | Classic |
| Surface Recommendation | Hard Floor |
| Theme | Professional classic |
| UPC | 860003555958 860003555965 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** FOAMON
- **Color:** Graphite
- **Material:** Textile
- **Product Dimensions:** 18"D x 20.25"W x 6"H
- **Size:** SIZE B MEDIUM

## Images

![Replacement Seat for Herman Miller Classic Aeron Size B Medium (Black Mesh) - Image 1](https://m.media-amazon.com/images/I/81Epd7b09qL.jpg)

## Questions & Answers

**Q: Made a mistake; bought a c by mistake. due illness i missed the july 28th cutoff. might you grand me an exception as a fellow small business owner?**
A: Hello. All our products are being fulfilled by Amazon. Regarding Return and Refund also being handled by Amazon. We don't have the ability to modify or amend Amazon's Terms and Policies on our end. Thank you for your understanding.

**Q: Hi will this fit my FO# 574285 101?**
A: Somewhere on these chairs the size is imprinted. Mine is a sixe B although I cannot tell you if that is a match to your FO# above. There is a tutorial on UTube that will show you how to confirm size and replace the insert, which is tricky.

**Q: Will the size B seat fit a size C chair if I wanted to down size?**
A: No. Many assume Size B will fit into Size C. 
But unfortunately The Size B never fit size C and vice versa.

**Q: Hello! cab you confimr that this will fit my chair? i have a size b and found these 2 codes under the chair: ae223awb & hmb-ae1-0005949. thank yo**
A: Yes this code is Size B

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect seat replacement for my size B Aeron chair
*by M***T on February 4, 2026*

I have an Aeron chair (size B) that I bought in the late 90s. A few years ago the seat started to tear. Not bad after 20+ years of almost daily use. I bought a replacement mesh which turned out to be a bad idea. It didn't quite fit and it wasn't made of the same stretch material as the original seat. Ok, lesson learned there. So I bought this and it was a perfect replacement. It's an entire new seat, not just the mesh. The mesh is the same stretchy material as the original. It looks identical to the original seat as far as I can tell. Replacing the seat was pretty easy. The instructions were good and it came with the tools needed. I think it took about 20 minutes and I was done. If you've made an investment in this chair, I think it's worth it to spend a little more getting this replacement seat so you have the official product. I'm writing this review 2.5 years later in Feb 2026 and the seat is still great. Zero problems, no regrets.

### ⭐⭐⭐⭐⭐ Perfect Replacement – Feels Just Like the Original
*by H***S on April 29, 2025*

This replacement seat for my Size B Aeron chair fit perfectly and matched the original in both comfort and quality. The mesh feels sturdy, supportive, and identical to what came with the chair originally. Installation was simple, and once it was on, I honestly couldn’t tell the difference. If you’re looking to refresh your chair without replacing the whole thing, this is the way to go. Solid product.

### ⭐⭐⭐⭐⭐ Perfect Fit
*by M***C on February 2, 2025*

This is a perfect fit for our Aeron chair that fell apart after more than 25 years of use. It seems to be as good quality wise as the original and was straight forward to install. Very comfortable with the same feel as the original.

## Frequently Bought Together

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-24*