Robern Cartesian & Profiles Side Kit, 15" H x 21" DCartesian & Profiles Side Kit, 15" H x 21" D You must choose one side kit for every exposed side. Side kits cannot be stacked on top of one another. Side kit height options are 7 1 2", 15", 22 1 2" and 30". Side kits are sold separately. They are available individually or as pairs. Side kit depth must match depth selected for your overall vanity solution. Dimensions: 21. 5 x 25. 25 x 4. 75 in Weight: 16. 25 lb Additional Resources: Specification Sheet