Networks Centre stock Brand-Rex Air Blown Fibre System: Brand-Rex Blolite Microduct Single Blown Fibre Elements. The system can be used in internal and external applications with their market leading Blolite and MicroBlo ranges. The use of Air Blown Fibre Systems gives complete freedom from risk by pre-installing a ducting route and then blowing in the fibre element when required. Available in single mode and multimode optical fibres variants. Please call us with your requirements on 01403 754 233