Functioning The S plug is suitable for prepositioned and pushthrough installation When turning in the screw, the S plug expands in two directions, thus providing a secure anchoring in the building material The required screw length is given by the plug length + plaster and/or insulation material thickness + fixture thickness + 1 x screw diameter Suitable for wood and chipboard screws The edge distance must be at least one plug length For installations close to the edge, turn the plug so that the expansion force acts parallel to the edge