Broan-NuTone IWA3-1000ULN Three-Wire Flat Ribbon Cable (UL Listed), 1000 ft., 22 gauge NuTone Intercom Wire is an integral part of all NuTone Radio Intercom Systems; such wire has been designed to enable full system performance and to minimize outsi de interference, dimmer noise, radio frequency interference and other reception problems. If wire other than NuTone specified wire is used in the installation of a NuTone Radio Intercom, the Warranty shall not be applicable to any defect or problem r elating to the use of non-NuTone specified wire. Broan-NuTone IWA3-1000ULN Three-Wire Flat Ribbon Cable (UL Listed), 1000 ft., 22 gauge Features: • UL Listed • 1000 ft • 22 ga. • Flat Parallel 3 Wire Cable (UL Listed