32 mm cabinetmaking system
The 32 mm cabinetmaking system (colloquially called system 32) is a set of principles that has evolved for the production of ready-to-assemble and European-style, frameless construction custom cabinets and other furniture. While not defined by any standardization body, it is in wide use globally, partly owing to IKEA using some of its elements in its furniture.
Source: Wikipedia — 32 mm cabinetmaking system (CC BY-SA 4.0)