Sled-base guest chair offers solid construction for lasting performance and a fully upholstered outer back. Special lower lumbar area provides proper support for a natural sitting position. 20" wide x 19" seat is made of 1/2" thick, five-ply curved plywood and a 3-1/2" urethane foam cushion. Back measures 19-3/4" wide x 16" high. Distance between arms is 19-1/2". Design offers select hardwood square arms, frames and base caps. Chair is certified by SCS to be in compliance with specific, indoor, air-quality emission requirements and meets or exceeds applicable ANSI/BIFMA standards.