B-Line Eaton series strut channel, 1.62" channel height, 240" channel length, 1.62" channel width, 12 Gauge steel, SH hole pattern, B22 channel type,

B22 is the back-to-back welded profile: two 1.62 inch channels joined, giving an overall section of 1.62 inches wide by 1.62 inches deep in 12 gauge steel. If you only need a single channel section, you want a B22's single-channel counterpart rather than this part. The doubled section is what contractors reach for on longer unsupported spans and heavier trapeze runs.

Plain finish, meaning bare steel with no zinc or paint coating. Use it indoors in dry locations, or plan to prime and paint it. For damp, exterior, or corrosive areas you should specify a coated version of the B22 channel instead of the plain one.

Yes. The channel opening is the standard 1.62 inch (1-5/8) strut profile, so ordinary 1-5/8 strut nuts, pipe clamps, angle fittings and beam clamps engage the returns the same way they do on any single 1-5/8 channel. Nothing about the back-to-back B22 section changes what goes into the open face.

SH is the slotted-hole pattern punched in the back of the channel, as opposed to a solid (plain-back) channel. It lets you bolt the strut straight to structure or to another channel anywhere along the run without field drilling, which is why it is the common pick for overhead trapeze and wall-mounted racks.

12 gauge is the standard heavy-duty thickness for 1-5/8 strut channel; the lighter options in the category are 14 and 16 gauge. Combined with the back-to-back B22 section, this is the spec you use for trapeze hangers carrying multiple conduit runs or pipe, not for light single-conduit support.

Order Eaton B-Line part number B22SH-240 PLN. That string reads as B22 back-to-back channel, SH slotted hole pattern, 240 inch length, plain finish. Quote it in full when matching an existing run, since the same B22 profile is sold in other hole patterns and finishes.

Yes, strut is routinely field cut with a bandsaw, chop saw with a metal blade, or portaband. Because the B22SH-240 PLN is plain uncoated steel, the cut end has no coating to touch up, but it also has no corrosion protection to begin with, so any end treatment is down to the environment you are installing in.