B-Line Eaton series strut back-to-back welded channel, 1.62" channel height, 120" channel length, 1.62" channel width, Steel, 12 Gauge, B22 channel, H

It's a back-to-back welded channel: two B22 strut sections welded spine to spine so slots face out on both sides. That's why the profile measures 1.62 inches in both height and width instead of the taller single-channel section. Use it where you need to mount hardware, clamps or trapeze hangers off either face, or where a single channel doesn't carry the span.

The finish is hot-dipped galvanized, which is the coating specified for exterior, damp and corrosive-duty runs, rooftop equipment supports and parking structures. Cut ends and field-drilled holes lose that coating, so touch them up with a cold galvanizing compound.

Yes. B22 is the back-to-back form of the standard 1-5/8 inch strut profile, so the usual 1-5/8 inch strut nuts, channel nuts, pipe clamps, post bases and angle fittings engage the slotted faces. Because both faces are open on a back-to-back section, you can bolt fittings to either side of the same run.

12 gauge steel, which is the heavy-duty structural thickness in strut framing rather than the lighter 14 or 16 gauge used for light fixture and small conduit support. Combined with the back-to-back welded section, this is what you spec for trapeze hangers carrying multiple large conduits, pipe racks and equipment platforms.

No. It's supplied as bare channel only, one 120 inch stick of hot-dipped galvanized 12 gauge steel. Order your channel nuts, threaded rod, conduit or pipe clamps, end caps and base fittings separately, and match them to galvanized or plated hardware if the run is exterior.

Go back-to-back when the span between supports is long, the load is heavy, or you need fittings on opposite faces of the same member, such as a long trapeze carrying several runs of large conduit or a free-standing equipment frame. A single 1-5/8 inch channel is enough for short spans, light fixtures and small conduit, and it is lighter to handle than the 38.2 pound stick this back-to-back section weighs.

The manufacturer part number is B22A-120HDG. In B-Line's coding, B22 is the back-to-back channel, 120 is the 120 inch length, and HDG is the hot-dipped galvanized finish. Quote that number if you are standardizing a facility on one strut section.