A shelving unit for storing containers such as baskets and boxes with different edge heights, comprising at least two side edge constructions comprising a spacer connecting a first edge post and a second edge post which are substantially parallel, and at least two beams connecting said side edge constructions from the first edge post of the first side edge construction to the first edge post of the second side edge construction and from the second edge post of the first side edge construction to the second edge post of the second side edge construction, said beams arranged parallel to each other and substantially perpendicular to said edge posts, characterised in that said beams comprise a first profile extending horizontally from the beam, said first profile being arranged to hold a container having a maximum edge height, and a second profile extending horizontally from the beam, said second profile being arranged to hold a container having a second edge height, wherein said second edge height is greater than said maximum edge height and said maximum edge height is determined by the distance between said first and said second profile.