BEVCO’s Integra ESD/ISO 4 Cleanroom Series models are designed to meet specific particulate goals of ISO 14644-1 and the ESD requirements of ANSI/ESD STM12.1-2019 delivering a combination ESD/Cleanroom seating solution for highly technical environments. The Integra makes working easy! The medium backrest is specifically shaped to provide full back support, which comes standard with a heavy-duty polypropylene back shell to protect the upholstery. The generous seat provides an exceptional seating experience while the thick, resilient, high-density foam provides long-lasting comfort. This articulating tilt model features simultaneous seat and back adjustments to properly position the angle of the chair for increased comfort during extended sitting durations. The pneumatic height adjustment allows you to easily change your seat height from 15.5" - 21". Upholstered blue vinyl is antibacterial; antifungal and complies with CAL 117. This chair comes with a sturdy 25" diameter polished aluminum base. Model comes standard with ESD mushroom glides. Optional ESD casters can be ordered separately.