This product Measuring 15"*12"*6.5" overall, our counter bookcase is capacious, perfect for books display. 2 parts separated, its length could be expanded from 15" to 28.5", better fitting your desk size.Unique unlock designed, our desk storage shelves enables DIYers to place them in creative combination and customize the best storage solution according to the desk’s size, an indeed helper for clutter tables of office, corner, kitchen, living room, etc.Our small desk cubby comes in whole, no extra installation needed, ready to use after receiving. To keep it secure on table, you can attach the anti-slip pads we offered, 8 pieces in total, to the bottom of the shelves.