B-Line Eaton series strut fiberglass channel and fittings, 3.25" channel height, 120" channel length, 1.62" channel width, Vinyl polyester resin

The section is 1.62 in wide, which is the 1-5/8 in strut standard, so fittings and channel nuts built for that profile match the opening width. Where you need to be careful is depth: at 3.25 in tall this is the deep section, so anything that wraps or clamps around the outside of the channel, like post bases, clamps, and splice plates, has to be sized for the 3.25 in back depth and not the shallow 1-5/8 in one.

Fiberglass strut is what people reach for where steel rusts out: wash-down areas, water and wastewater plants, coastal installs, chemical rooms. The BFV22A-120 is molded from vinyl polyester resin rather than metal, so there is no galvanizing to scratch through and no rust bleed. If your run is indoor, dry, and carrying heavy mechanical loads, steel channel is normally the cheaper and stronger pick. The other practical difference: fiberglass is non-conductive, which matters around electrical gear.

About 11.5 lb for the full 120 in stick. That is light enough for one person to carry and set overhead without a lift, which is one of the main reasons crews specify fiberglass over steel on long horizontal runs and ceiling-hung supports.

Yes, it ships as a 120 in stick and gets cut to length in the field like any strut. Because it is a vinyl polyester resin composite rather than steel, cut it with an abrasive or carbide blade and wear respiratory and eye protection for the glass dust. Cut ends on fiberglass channel should be sealed with a resin end coating to keep moisture out of the exposed fibers, which is the whole point of using it in a corrosive area.

What you are ordering under BFV22A-120 is the channel itself, a single 120 in length of the fiberglass section. Brackets, channel nuts, fasteners, post bases, and end caps are separate line items. In a corrosive environment there is no point hanging fiberglass channel on plated steel hardware, so plan on non-metallic or stainless fittings and nuts sized for the 1.62 in wide profile.