They fit the space inside.

Previously, the internal fasteners in the boxes were quite simple and the same, and today the installation of simple loops is a rather frequent solution. Although, most cabinets are now sold with hidden door hinges. They fit the space inside. Some loops are equipped with a smooth closing function, which means that the hinge catches the door before it slamms. This is useful not only to combat noise, but also as a tool for preserving the appearance, since doors deteriorate and exhaust after several years clapping them. You can use one of the «make» projects and, having bought special nuts and devices, improve your kitchen cabinets yourself.