TMS X retail 4 tier bookshelf, trapezoidal bookcase, black

Product Name: TMS X retail 4 tier bookshelf, trapezoidal bookcase, black
"Product Details 4 tier trapezoidal shelves in a variety of finishes, with shelves of the same width but increasing in size, giving you more surface area for storing items near the bottom of the unit. It features a classic X-shaped back panel behind the top and third shelf, adding style to any area while increasing stability. Classic X design Ideal for storing books, decorations and retail more X-back design behind top and third shelves Dimensions: 20""W x 18""D x 56""H Number of shelves: 4 Top shelf dimensions: 18.5""W x 7.25""D Second Shelf Dimensions: 18.5""W x 10.8""D Third Shelf Dimensions: 18.5""W x 14.25""D Chassis Dimensions: 18.5""W x 18.1""D Need to assemble".