B-Line Eaton series runway splice, Used to connect runway stringers, Cable runway butt-splice clamp and kit, ASTM A570 structural steel, Yellow zinc

The SB2107YZ is a butt-splice clamp kit for joining runway stringers end to end. When you run cable tray runway longer than a single stringer length, the stringers meet in a butt joint and this clamp bolts across that joint to tie the two sections into a continuous run. It is a splice, not a support or a wall bracket, so you still need your normal trapeze, threaded rod, or wall-angle support at the joint.

The splice is UL Listed and made from ASTM A570 structural steel with a yellow zinc finish, which is the standard indoor combination for telecom and data center runway above racks. Yellow zinc is a dry-interior plating, so for exterior or washdown areas look to a hot-dip galvanized or stainless runway splice instead.

It ships as a clamp and kit, so the splice hardware comes together as one part number under SB2107YZ. Order one kit per stringer joint you are splicing, and remember a two-stringer (ladder-style) runway has two rails, so a single runway joint takes two kits.

No. The SB2107YZ is a butt splice, meant for two stringers meeting end to end in a straight run. For corners, tees, or elevation changes you need the matching runway junction, elbow, or radius fittings rather than a butt-splice clamp.

Count one kit per stringer end joint. Take the number of straight runway sections in a run, subtract one to get the number of joints, then multiply by the number of stringers in the runway (two for a standard ladder rack). Corners and junctions use their own fittings, not this splice.