Five cubes of uneven size step up a 70-in ladder frame in gray, breaking the shelf line so objects of different heights can be displayed without looking regimented. Each shelf holds 44 lbs. P2-standard particleboard with MDF gives the unit 67 lbs of weight - substantial for a tall, narrow frame measuring 31 x 11 in at the base, which is what keeps it steady. The 11-in depth suits a corner or a hallway. Gray reads cooler than the white version against painted walls.