The invention relates to a set of plates, such as a wall, a stand, a housing and a container, comprising: at least two plates for coupling to each other, wherein the plates are provided with longitudinal receiving and inserting coupling structures securing against transversal displacement for forming a form-fitting coupling, wherein the inserting coupling structure comprises a rod extending along a respective plate and a lock opening bounded by the rod and plate; and locking means for locking and/or biasing the coupling, wherein the locking means are received in the receiving coupling structure and engage on the rod in the lock opening, to a plate provided with receiving and/or inserting coupling structures for forming a form-fitting coupling, to locking means and a coupling structure therefor.