Adjustable Height Group Marker Carrier - 249 Series Adjustable height group marker carrier for 2 WMB markers or 1 x continuous strip; 10 mm wide; snap-on type and adjustable in height from 43.5 mm to 59.5 mm in Wago 246 Series end stops: 249-116 (RS 796-0460) and 249-117 (RS 813-3230). Also incorporates slot for Wago WMB, WSB, WCB markers.