B-Line Eaton series strut channel, 2.43" channel height, 240" channel length, 1.62" channel width, Steel, 12 Gauge, SH hole pattern, B12 channel type,

The finish here is pre-galvanized steel, which is the standard indoor and dry-location finish for electrical and mechanical support. It handles normal interior humidity fine. For exterior runs, wash-down areas, coastal exposure or corrosive process spaces, specify hot-dip galvanized or stainless channel instead, since pre-galv leaves cut ends and punched edges bare.

SH is the slotted-hole back pattern, so the channel comes punched along its back for through-bolting to structure or for joining channel to channel. If you want an unpunched solid back for a cleaner run or full strength through the web, that is a different channel designation, not the SH.

12 gauge is the heavy-duty strut thickness, the standard choice for trapeze hangers, conduit racks, pipe supports and equipment stands. Combined with the 2.43 inch deep B12 profile, it carries substantially more than the lighter 14 or 16 gauge channel used for light fixture hanging and small runs. Size the actual load against B-Line's published load tables for your span.

The opening matches at 1.62 inches, so the same strut nuts and fittings cross over between deep and shallow channel. The difference is the back depth: at 2.43 inches the B12 stands roughly three times deeper than shallow 13/16 inch channel, so a run spliced from one to the other will not sit flush and the mounting face shifts. Keep a single profile within a run and use a transition fitting where depths change.

Order it as Eaton B-Line B12SH-240GLV. Read it as B12 channel type, SH hole pattern, 240 inch length, GLV for the pre-galvanized finish. Specify that full string when matching existing material, since the same B12 profile is sold in other lengths, hole patterns and finishes.

Yes, the channel ships as bare stick only. Strut nuts or spring nuts, bolts and washers, plus end caps, splice plates or angle fittings, and whatever anchors suit your substrate, are all separate. Because the SH pattern is already punched through the back, you can through-bolt to structure without drilling, which saves buying beam clamps on some runs.