B-Line Eaton series runway shelf bracket, Yellow zinc, Steel, Used with 3/8" X 1-1/2" stringers, 12" runway width, Cable runway wall supports

It is made for 3/8 in x 1-1/2 in stringers, which is the standard B-Line runway stringer profile. If your existing ladder rack uses a different stringer section, the bracket will not seat correctly.

Plan for 15 in of projection off the wall and 4.625 in of vertical height at the bracket. That projection is what determines whether the runway clears a door swing, a conduit run, or an equipment rack face, so check it against the wall obstructions before you lay out anchor points.

You are ordering the shelf bracket itself, model SB213S12YZ, at 3.4 lb each. Wall anchors sized to your substrate (concrete, block, or stud) and the stringer-to-bracket fasteners are separate line items, and the runway sections themselves are ordered separately as well. Count one bracket per support point along the run.

A wall bracket like the SB213S12YZ is the right call when the runway runs along a wall, when the deck above is too high or too congested for rod drops, or when you want the pathway tight to the wall to keep the room clear. Overhead threaded rod support is what you use for runway crossing open floor space away from any wall. Many rooms use both: brackets on the perimeter, drops across the center.

Yellow zinc is a plated finish for dry indoor use, typical of telecom closets, data centers, and MDF/IDF rooms. It is not a finish for exterior or wash-down environments. If you need to match adjacent runway hardware, order the yellow zinc parts together so the plating tone is consistent.