Lot of 8 Herman Miller Aeron chairs, Size B (Medium). Black frame with polished aluminum base. These were used in a seldom-used office that we ended up closing down. Model: Herman Miller Aeron Chair. Frame/Base: Black frame with polished aluminum base. Back support: Basic back support. Casters: Multi-surface casters (quiet roll). Minor cosmetic wear possible from normal office use. Chairs are fully assembled – please bring an appropriate vehicle for 8 chairs.