B-Line Eaton series strut back-to-back welded channel, .81" channel height, 240" channel length, 1.62" channel width, Steel, 12 Gauge, B52 channel typ

The B52A-240GLV is pre-galvanized, which is a mill zinc coating applied to the steel before forming. That suits dry indoor and normally protected areas. For exterior exposure, washdown, or corrosive environments, specify a hot-dip galvanized after fabrication or stainless channel instead, since cut ends and weld points on pre-galvanized stock are bare steel.

The channel face is 1.62 in wide, which is the standard 1-5/8 in strut opening, so channel nuts and fittings sized for 1-5/8 in strut engage the lips. What changes is depth: at .81 in high, this is the shallow B52 profile, so deep-section brackets, closure strips, and end caps made for 1-5/8 in deep channel will not seat. Order fittings called out for the shallow 13/16 in channel.

Two lengths of B52 channel are welded back to back, so you get slotted faces opening in opposite directions off one member. Electricians and mechanical contractors use it for trapeze hangers and free-standing racks where equipment or conduit clamps mount on both sides of the same run, instead of bolting two separate sticks together in the field.

It ships as bare channel only, model B52A-240GLV. Channel nuts, spring nuts, threaded rod, beam clamps, pipe clamps, brackets, and end caps are all ordered separately. Budget the fitting count per hanger point when you take off the job.

Certifications on the B52A-240GLV are listed as Not Applicable. It's a structural support channel, specified by gauge, material and section rather than by a listing. If your drawing calls out a specific listed support system, verify the spec against the channel section and gauge called for.