Seat for Herman Miller Classic Medium Black Mesh. Made to Fit Only Herman Miller 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 s 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 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 inch Width x 18 inch Depth x 6 inch Height, our Herman Miller Aeron 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 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! Want To Renew Your Old Office Chair? Office chairs are not always indestructible. What once was a sturdy and comfortable new swivel chair will also age and wear down. If you use your chair regularly, then it’s likely that you’ll eventually see its frame start to break or crack. The firm yet soft mesh you used to love will also end up ripping, sagging, or losing tension as time passes by. But all of this shouldn’t mean that you have to say goodbye to your favorite chair. With proper parts, you can restore your chair and bring it back to its former glory! The Herman Miller Seat by lets you breathe new life into your chair.