B-Line Eaton series strut back-to-back welded channel, 1.62" channel height, 120" channel length, 1.62" channel width, Aluminum, 12 Gauge, SHA hole pa

B22 is a back-to-back welded channel, meaning two channel sections are welded together spine to spine to form a closed box profile. The B-Line B22SHA-120AL measures 1.62 inches in both height and width and runs 120 inches long, so you get strut openings facing opposite directions on the same run. It is used where a single open channel does not carry enough load or where you need to mount hardware on both faces of a trapeze or rack.

The B22SHA-120AL is aluminum, 12 gauge. Aluminum strut is the usual pick for coastal, wash-down, water treatment, and rooftop work because it does not rust when the cut ends are exposed, unlike pre-galvanized steel which only protects the mill surface. Trade-off: aluminum carries less load than the same profile in steel, so check your span and load against the aluminum load table rather than the steel one.

Yes. The B22SHA-120AL is a 1.62 inch wide channel, which is the standard 1-5/8 inch strut profile, so channel nuts, clamps, brackets, and pipe straps built for 1-5/8 inch strut engage the lipped opening normally. Because it is back-to-back, you have an opening on each side of the run to land fittings in.

SHA is B-Line's short slot hole pattern punched through the channel back, so the B22SHA-120AL arrives pre-slotted rather than solid. That lets you bolt the run to a wall, deck insert, or threaded rod anywhere along the 120 inch length without drilling on site. If you want a solid back for a cleaner look or maximum section, you want a plain (no-hole) B22 instead.

It stands on its own. Back-to-back welded channel is used as the structural member itself, for trapeze hangers, equipment racks, free-standing frames, and column or post work, where single channel would deflect. The B22SHA-120AL gives you a closed 1.62 by 1.62 inch box section in one piece, so you are not field-welding or bolting two sticks of single channel together.

Yes, the 120 inch stick cuts to length with a standard metal-cutting blade, and because it is aluminum the fresh cut end does not need galvanizing touch-up the way cut steel strut does. It is 12 gauge, so expect a heavier cut than thin-wall tube. Deburr the lip edges before sliding a channel nut past the cut.