It is all in one piece. This is particle board but sturdy, which has the wood look layer peeling off in several places; see pics. There is also a shelf missing, as can be seen in the third picture. Keyboard tray rolls out easily, as do the 4 casters on the bottom. Must pick up. Dimensions: H - 61 H floor to top desk - 29.25 W - 35.5 D - 21 Smoke free, pet friendly. Bear Creek area.