B-Line Eaton series strut channel, 2.43" channel height, 120" channel length, 1.62" channel width, 12 Gauge steel, B12 channel type, Pre-galvanized

Pre-galvanized (mill galvanized) is the finish here, and it is an indoor, dry-location finish. The zinc coats the sheet before roll forming, which leaves the cut ends and any field cuts bare steel. For exterior, wash-down, parking garage, or corrosive environments, specify hot-dip galvanized after fabrication or stainless channel instead. Indoors above ceilings, in mechanical rooms and electrical rooms, pre-galvanized is the normal choice.

Yes. At 1.62 in wide, the B12 uses the same 1-5/8 in slot opening as standard strut, so 1-5/8 in spring nuts, channel nuts, conduit clamps, pipe straps, and post bases all engage normally. Only the fittings that wrap the outside of the channel, like some end caps and closure strips, need to be picked for the deeper 2.43 in profile rather than the shallow one.

B12 is the deep profile, 2.43 in tall against the 1-5/8 in of standard channel, formed from 12 gauge steel. The extra depth and the heavier gauge are what contractors buy it for on trapeze hangers and longer unsupported runs of conduit or pipe. Load values come off Eaton's published span tables for the specific loading condition, so size the run against those rather than by profile alone.

Order it as B12-120GLV: B12 channel type, 120 in long, pre-galvanized. B-Line designates slot patterns with a suffix on the channel type, so this base B12 designation is the solid back channel. If you need knockouts or a slotted back for adjustability, order the corresponding slotted B-Line variant instead.

12 gauge steel, the heavier of the two common strut gauges. It ships as a 120 in stick, so field cutting with a bandsaw or chop saw is normal. Since the galvanizing is applied before forming, touch up every cut end with a cold galvanizing compound, particularly on any run that may see moisture.