RK Range Rigid protective conduit systems - The system of rigid protective conduits, made of extremely high quality material, guarantees excellent quality to offer greater performance. Available with diameters from 16 to 63 mm, versions RK9 (light), RK15 (medium), RKB (heavy) and RKHF (heavy) made of LSF0H material. They are fully integrable with the systems of flexible conduits and junction boxes. Completing the offer, a wide range of couplings and routing components with IP40 and IP67 degree of protection.