The Herman Miller Aeron B Size Back Frame with Posture Fit is a brand new OEM product designed for office chairs. This back frame, made by the reputable brand Herman Miller, is specifically designed to provide proper support and comfort for employees in the office and at home. With its adjustable Posture Fit technology, it ensures that users maintain good posture while seating for extended periods of time, promoting better overall health and productivity. Ideal for enhancing both the aesthetic and functionality of office spaces, this back frame is a reliable and high-quality option for businesses seeking to improve their workspace environment.