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. The 20" wide x 20" deep x 18-1/2" high seat is made with 1/2" thick, five-ply curved plywood and a 3-1/2" urethane foam cushion. Back measures 19-3/4" wide x 16" high from seat. Distance between arms is 19-1/2". Design also offers select hardwood square arms, frame 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.