The multidose consists of two parts: the base and the standard lid, both constructed with interlocking detent teeth. The plasterer pushes the lid to the required height during plastering. This ensures that the box is always installed flush with the plaster, especially in old building renovations without a plaster equalisation ring. For flush-mounted installation, we recommend using the reusable plaster spring; search drilling in hollow walls is not necessary when using the drill cover.