The SB system features a high performance solid black thermoplastic covering material, designed to withstand impact in high use public spaces. Connectors overlap unit connections, creating a continuous base surface. Standard laminate color is black, special colors are available. Higher security installations may fasten 2-3 chairs, tables or benches together on a common plinth base. Sections may then be joined with plinth base connectors.
Bolts pass through a steel connector plate into insert nuts in the chair frame.
Normal security connection is made between unit frames using a spring steel clip at front and back. Connections are concealed under the seats at the front and back. When connection of a grouping is completed, no connections are visible and the group becomes as one large unit. To disconnect a unit, the two bolts on each side can be removed, allowing access to any unit of the grouping. OPT4 OPT4 chairs, sofas and segments offer normal level connection by black plastic connectors which screw onto the glides at the front and back of each unit.