Front element + mounting plate for potentiometer Harmony ZB4. Black metal cover. Mounting diameter 22 mm, weight 0.08 kg. Head shape round, standard. With high vibration resistance and chemical resistance, ambient temperature -40 to +70 degrees C. The modular metal program with 22mm installation dimension combines easy installation, efficiency and modern design. Certifications according to LROS (Lloyds register of shipping), RINA, UL listed, CSA, BV, DNV, GL. Product standards according to EN/IEC 60947-5-1, UL 508, EN/IEC 60947-1, CSA C22.2 No 14, JIS C 4520, EN/IEC 60947-5-4, EN/IEC 60947-5-5.