B-Line Eaton series strut back-to-back welded channel, .81" channel height, 120" channel length, 1.62" channel width, Steel, 12 Gauge, B52 channel typ

The B52A is a back-to-back welded channel with a 1.62 inch channel width, which is the standard 1-5/8 inch strut profile, and a .81 inch channel height. That .81 inch height is the shallow (half-height) channel, so two of them welded back to back give you a roughly 1-5/8 inch square overall section rather than the deeper 1-5/8 x 3-1/4 profile you get from two full-height channels. Stock length is 120 inches.

Yes. The B52A-120HDG is hot-dipped galvanized steel, which is the finish specified for outdoor, damp, and corrosive environments: rooftop mechanical supports, exterior conduit racks, parking structures, wastewater and coastal work. If the run is indoors and dry, a plain or pre-galvanized finish is normally used instead and HDG is over-specified.

It is 12 gauge steel, the standard heavy commercial strut thickness. Because the channel width is the common 1.62 inch (1-5/8 inch) profile, ordinary 1-5/8 inch strut nuts, spring nuts, channel clamps, and fittings engage the slot the same way they do on any standard strut. Note the .81 inch shallow channel depth: deep-throat hardware sized for full-height channel may bottom out, so use nuts and clamps rated for the half-height profile.

Back-to-back welded channel is what you go to when a single run of strut deflects too much or when you need slot access from both sides. The two channels are factory welded together so the assembly acts as one member, which roughly doubles the load-carrying section over a single stick without field welding or bolting two pieces yourself. Typical uses are long unsupported trapeze spans, heavy pipe and duct trapezes, freestanding racks, and posts. For short brackets, single-run conduit clamps, and light fixture hangers, a single channel is the correct and simpler choice.

Order Eaton B-Line part number B52A-120HDG. Reading the code: B52 is the channel type, A designates the back-to-back welded assembly, 120 is the length in inches, and HDG is the hot-dipped galvanized finish. If you need a different length or a different finish, the same B52A family carries other suffixes, so specify the length and finish code explicitly on the PO.

No. It ships as bare 120 inch channel only. You order the attachment hardware separately: strut nuts or spring nuts with the bolts, plus whatever end caps, post bases, fittings, angle brackets, or beam clamps the assembly calls for. For exterior work where this galvanized channel is being used, match the hardware finish to the channel (galvanized or stainless) so you are not putting plain steel fasteners into a corrosive location.

Yes, 12 gauge steel channel cuts with a bandsaw, chop saw with a metal blade, or portable band saw. The cut end loses its hot-dipped coating and will rust in an exterior or damp location, so brush on a cold galvanizing compound or zinc-rich paint at every field cut and at drilled holes. On dry interior work the bare end is usually left as is, though an end cap keeps it from being a hazard.