The shaft lining solution with the trademark "elkuch® Trompete" is available in d 110, d 125 and d 160. A high peak pressure resistance, temperature resistance from -20 C to +80 C as well as a watertightness of up to 0.5 bar offer a safe product for wall ducting. Material HDPE, standard length 200mm. The ridges are positioned so that the shaft liner is always axially straight and clean. Contact us for more.