B-Line Eaton series strut channel, 1" channel height, 240" channel length, 1.62" channel width, Steel, 12 Gauge, SH hole pattern, B42 channel type, St

It is type 304 stainless steel, which is the reason to pick this over painted or plain galvanized strut: exterior runs, rooftops, food plants, water treatment, pool and washdown rooms. Plain steel strut rusts at every cut and drilled hole in those environments; 304 does not carry a paint film that can chip.

SH is the slotted hole pattern punched through the back of the channel, so you can bolt the strut to structure or hang it from rod anywhere along the run without drilling. The slots give you adjustment along the length, which is what you want when you are lining up a trapeze to an existing anchor. If you need a solid back with no penetrations, that is a different unpunched channel.

For conduit runs, cable tray supports and light equipment mounting the 1 inch deep 12 gauge section is common wall-mount and short-span strut, and the SH slots let you land clamps anywhere. For long unsupported trapeze spans or heavy mechanical loads, engineers normally move up to the full 1-5/8 deep section, or double it back to back, because depth is what drives the beam strength. Check the span against the load table for your job.

Order it as Eaton B-Line B42SH-240SS4. Reading the code: B42 channel profile, SH slot pattern, 240 inch length, SS4 for type 304 stainless. That single part number covers the whole stick, there are no finish or length options to pick underneath it.

Yes, strut is cut to length in the field, and the 240 inch stick is meant to be cut down. With 304 stainless, use a blade or wheel kept for stainless only, since carbon steel debris embedded in a cut end is what starts rust on an otherwise corrosion resistant run. Cut ends stay bare, there is no coating to touch up.