For clear labeling of inserts. When the frame and central plate are dismantled, the label holder remains on the insert. This ensures that switches, sockets or KNX components can be assigned even after renovationxx Accessories Label strips for 1-M frames with label holder 387100. Scope of delivery 4 label strips and 4 viewing windows per frame. Material: brilliant, antibacterial thermoplastic. Smooth and self-disinfecting surface with antibacterial effect. Color similar to RAL 9016. Color: active white, glossy.