The Conec2 CLB45-4K-C3 is a 45mm Snap-in Module featuring 1 x Voice RJ11 Connector on the front of the Module., Conec2 Snap-in Module featuring 1 x Voice RJ11 Connector. Simply snaps into place in Conec2 (45mm) Faceplates and Riser Pods, Rozmiar = Gniazdo