Four-shelf bookcase is designed for use with the Mayline Brighton Collection that offers subtle radiuses and arches for a unique look. Three upper shelves are adjustable in 1-1/4" increments. Each adjustable shelf has 7-1/2" of total adjustment. The three upper shelves include a corner mouse hole for vertical cable management. Back panel provides a grommet just above the bottom shelf for wall access. Bookcase is made of thermally fused laminate and leveling glides that provide 1/2" of adjustment.