Replacement Seat for Herman Miller Aeron Chair Size B — Classic Models Only

Refresh your Classic Aeron chair with a purpose-built mesh seat pan designed specifically for Size B. This replacement seat offers a precise fit for classic-model Aerons, restoring comfort and appearance when the original fabric shows wear or damage.

Features

• Fits Aeron Chair Size B on Classic models (not for Remastered/NEWER variants).
• Material: Classic Carbon Pellicle, the authentic mesh seating surface used on classic models.
• Seat pan dimensions (Size B): Width 20.3" • Depth 18".
• Direct replacement to renew a worn or torn seat without replacing the entire chair.
• Product is warrantied, in stock, and ready to ship.
• Simple installation with common tools (no torque wrench required): two 3/8" ratchets, 10mm socket, 4mm Allen, and 6mm socket.
• Identification tips: determine size by the underside rim dots (1 dot = A, 2 dots = B, 3 dots = C) or by the model tag on the base model.
• Other sizes available in separate listings (Size A and Size C) for different Aeron configurations.

Benefits

• Restores seating comfort and the chair’s aesthetic by replacing a worn surface with a durable, breathable Pellicle fabric.
• Preserves ergonomic support and the familiar feel of your Aeron, helping maintain long-term comfort for daily use.
• Cost-effective alternative to full chair replacement, extending the life of your investment.
• DIY-friendly installation—no specialized equipment required beyond standard shop tools, with clear guidance on size verification.
• Clear size determination reduces the risk of ordering the wrong part, saving time and avoiding returns.
• Supported by a warranty and immediate availability, ensuring a reliable, ready-to-ship solution.
• Ideal for offices, home workspaces, or any environment where long seating sessions demand durable, dependable components.