These shelves have removable lids with handy space for storing seeds and small gardening items in, with a wooden top for extra storage. Made of zinc and wood with fittings on rear of each shelf for easy fixing to the wall. Individual shelf sizes, Small W30 D9 H10cm. Medium W38 D11 H12cm. Large W44 D13 H14cm. Measurements: 13 x 14 x 44cm