Device installation system, pre-assembled, double, horizontal, pre-wired ready for connection, complete with adapter and cover frame, with socket insert for safety power supply, to snap into the cover receiving contour of the device ducts. Recommended for normal use. For special use (e.g. schools, workshops, sports halls) we recommend using our device installation boxes GDHR... in conjunction with an appropriate switch range. The cross-section of approx. 2880 mm² must be deducted from the usable cross-section of the device duct. Set consists of: 1 x protective box, double, grey 1 x device adapter, double, module 45, with 4 spring clips 1 x socket insert, double, horizontal, with plug-in terminals for cables 1.5 - 2.5 mm², 2-pole, with contact protection 1 x cover frame, double, module 45, including viewing window with label for labeling field 2 x cable ties for strain relief 1 x assembly instructions for device duct bases: GKU ... DKU ... PGU ... PLU ... GAU ... DAU ... ESDB 133/... ESED 133/... ESDD 133/... Dimensions (approx. dimensions) H x W : 83 x 138.5 mm for cover opening : 78 mm Nominal voltage : 250V / 16A Socket insert color : mint green RAL : 6029 (similar) Cover color : pure white RAL : 9010 (similar)