With the Divario shelves or separation walls can be inserted into pre-assembled structures. Additionally, the Divario P-18 also clamps the components during insertion, creating clean tight joints. The clamping action only occurs at certain points rather than across the entire insertion length, making the components easier to insert. Due to the strong connection between the work pieces, the joint is able to carry high tensile forces. With this new fitting the user has greater flexibility in design without having to forgo stability.