The RCI Custom Products VCBF Series blank volume control panel are designed to mount in any standard EIA equipment cabinet. Panels are made from 1/8" (11 gauge) aluminum, with a return flange on the top and bottom for additional strength. Standard finish is anodized black. The panels are either two or three RU tall, with the 2RU version holding one to six volume controls and the 3RU versions holding from six to twelve assemblies. When ordered, each volume control location will have a silk screened dial scale for each device. Volume control assemblies must be ordered separately.