Orange ” Traffic Signalling ” Twinwall Ducting Coils From The Southern Distribution Depot in manufactured in HDPE .The corrugated external wall giving excellent impact resistance strength & durability . Flexible and light weight , all twinwall ducting coils come with a draw cord strings allowing cables or pipes to be pulled through after installation , 90d 45d & 22.5d bends also stocked. Class 2 BBA Certified