One pipe for all installations, suitable for concrete floors and hollow walls High compressive strength > 1000 N, Robust and flexible, Flame retardant, Indication by orange marking, Thanks to grooved structure much more flexible and lighter than KRF/KRFW, 30% less pull-in force, Operating temperature: from - 5 °C to + 90 °C, corrosion-resistant, moisture-resistant, minimisation of sound transmission, coated inner jacket for excellent sliding properties