MAIN CHARACTERISTICS range of product MERTEN SYSTEM M aesthetic name M-ARC product or component type COVER PLATE product destination HOTEL CARD wiring device additional information WITH LIGHTING WINDOW colour tint ANTHRACITE colour code RAL 7024 material POLYCARBONATE MATT IP degree of protection IP20 COMPLEMETARY CHARACTERISTICS fixing mode BY SCREWS AND CLAMP marking location MARKING ON LEGEND HOLDER market segment RESIDENTIAL