At 21 in tall these two units sit at coffee-table height, so they work under a window, beside a sofa or stacked into a taller block as a room changes. Each has a shelf adjustable through five positions 2.5 in apart within a 15.5 x 11 in bay. The top takes 66 lbs and the shelf 44 lbs. Each measures 16.5 x 11.5 x 21 in and the pair weighs 28 lbs, shipping in two cartons with two user guides. Rustic brown engineered wood and MDF; assembly is required for both.