B-Line B32A-120YZN Eaton series strut back-to-back welded channel, 1.37" channel height, 120" channel length, 1.62" channel width, Steel, 12 Gauge, B32 channel type, Yellow zinc chromate

Yellow zinc chromate is a plated finish meant for dry indoor service. It gives better corrosion resistance than plain steel in a conditioned mechanical room or electrical room, but it is not a hot-dip galvanized or stainless product, so keep it out of exterior, wet, or corrosive environments. For a roof run or a wash-down area, specify a hot-dip galvanized or stainless strut instead.

Back-to-back welded means two channel sections are joined along their backs and factory welded into one member, so you get a closed box profile with slots facing both directions. Use it for trapeze hangers, long unsupported spans, and heavy pipe or conduit racks where a single strut would deflect. If you are just mounting a panel or a short run of conduit to a wall, a single-channel strut is lighter and cheaper. The B32A profile is 1.37 in by 1.62 in in 12 gauge steel.

The B32 channel type is the B-Line 1-5/8 in wide series profile, so the 1.62 in slot opening takes standard 1-5/8 in strut nuts, spring nuts, clamps, and fittings sized for that series. Match the hardware finish to the channel, yellow zinc or electro-zinc fittings with a zinc chromate channel, so you are not mixing platings in the same assembly.

Order by manufacturer part number B32A-120YZN. Reading that number: B32 is the channel profile, A designates the back-to-back welded configuration, 120 is the length in inches, and YZN is the yellow zinc chromate finish. Give the full string to your distributor, since the same B32 profile is sold in other lengths and finishes.

No. The B32A-120YZN ships as bare 120 in welded channel only. Strut nuts, threaded rod, beam clamps, post bases, conduit clamps, and pipe straps are all ordered separately, sized to the 1-5/8 in series profile. Count your connection points before ordering so you are not short of nuts on install day.

Yes, 12 gauge steel channel cuts fine with a bandsaw, chop saw with an abrasive or metal-cutting blade, or a portable band saw. Cutting exposes bare steel at the ends, so prime or use a cold galvanizing or zinc-rich touch-up on the cut face, otherwise the cut end rusts first even though the rest of the stick is zinc chromate plated.