There are many different kinds of shelves, such as:
Regular shelf. Goods are arranged on it in a standard way.
Boom. Designed to place on it additional equipment: hooks, fronts, etc. When placing goods on it, they stick "from bottom to top".
Wall with perforation. Designed for placing hooks, baskets, shelves, etc. The horizontal and vertical pitch of perforation must be specified. When placing attachments on it, they are positioned according to the perforation holes.
Economy panel. It is intended for placing hooks, baskets, shelves, etc. The vertical spacing of the fastening slots must be specified.
Solid back wall. Can also be used to place advertising materials on it