B-Line Eaton series strut channel, 1.62" channel height, 120" channel length, 1.62" channel width, Aluminum, 14 Gauge, B24 channel type

It's aluminum, 14 gauge. Aluminum strut is what contractors reach for on wet, humid, or corrosive runs, coastal work, wastewater, and food processing, where plain painted steel strut would rust out. It also cuts and drills faster in the field. The tradeoff is load capacity: aluminum carries less than an equivalent steel section, so on heavy pipe racks or long unsupported spans check your engineered load before substituting it for steel.

Yes. The B24 is a 1-5/8 inch wide by 1-5/8 inch high channel, the standard strut profile, so 1-5/8 spring nuts, channel nuts, pipe clamps, post bases, and angle fittings seat in the slot normally. Use fittings rated for the same duty as your run.

The Eaton B-Line part number is B24-120AL. Read it as B24 channel, 120 inch length, AL for aluminum. That's the number to give a distributor or put on a submittal.

That's where it earns its keep. The B24-120AL is solid aluminum rather than painted or plated steel, so it holds up in humid, salt-air, and regularly washed-down spaces without the rust bleed you get from cut ends and drilled holes on steel strut. Common in food processing, water treatment, parking structures, and exterior runs.

Yes, and aluminum at 14 gauge cuts cleanly with a chop saw and a non-ferrous blade or a portaband. It ships as a 120 inch stick, so most jobs cut to length in the field. Deburr the cut end and, on aluminum, there's no cut-edge paint touch-up to worry about the way there is with painted steel strut.