Autolock boxes are ideal for quickly and inexpensively sending products that are not too fragile. The big advantage of the autolock box is the practical bottom, which automatically folds together when the box is set up. The bottom is also sturdy and therefore safe, but not suitable for sending particularly heavy or fragile products. Our autolock boxes are made of brown cardboard with a single corrugation, which can carry a maximum weight of approximately 15 kilos. ... with a single wave, which can carry a maximum weight of approximately 15 kilos.