Instrumentation cables are used for supplying power to devices, operational control for huge plant facilities, traffic control systems and serve as antennae. It is constructed of soft annealed bare or tinned copper conductors with flame retardant PVC insulation and jackets.
Insulated Air Ducts are used for low pressure heating and cooling systems. It exceeds all requirements for commercial buildings in addition to code for residences. This is used in main trunk and return lines. It absorbs sounds that other types of ducts transmit, such as echoed conversations in other rooms, furnace starts and stops, and air rush noise, as well as eliminating cracks and pops due to expansion and contraction during operating cycles.