Lower part for creating a designer device installation duct from the GAD series. 45 mm system opening for accommodating Modul 45 switching and plug-in devices and corresponding PVC and aluminum upper parts from the Rapid 45 series. The duct lower part can be completed with duct covers from the 'Swing', 'Soft' or 'Style' designs. The GAD OTA upper part adapters are mandatory and should be planned at a maximum distance of 50 cm along the duct section. A GAD OTD spacer must be placed between the duct covers. The 45 mm system opening is closed with a black duct upper part when delivered.