Recessed mounting SD3-14 has 3RU panel space, a depth of 14-13/32" , and full extension slides for storing tapes, CD's, microphones, tools, and other accessories in 19" cabinets. Unit features ball-bearing slides for smooth opening and closure. It also includes detents to assist when securing drawer in closed position. Sturdy, 16-gauge CRS assemblies will support 100 lbs (45.39kg). Inside width of model is 16-5/16" (414mm).