B-Line Eaton series strut channel, 1.62" channel height, 120" channel length, 1.62" channel width, Steel, 14 Gauge, SH hole pattern, B24 channel type,

It is type 316 stainless steel. The B24SH-120SS6 is a 14 gauge strut channel with a type 316 stainless finish, which is the grade specified for chloride exposure such as coastal, wastewater, pool chemical, and food processing environments. If your run is indoors and dry, a plain or pre-galvanized channel does the same structural job for less material cost.

The B24 profile measures 1.62 inches by 1.62 inches, which is the nominal 1-5/8 inch square strut section. Standard 1-5/8 inch strut fittings, nuts, clamps, and hangers land on it. Note that the deeper 1-5/8 x 3-1/4 back-to-back sections are a different part.

SH is the slotted hole pattern punched in the back of the channel, so you can bolt the strut to structure or splice sections without field drilling. If you want a solid back with no punching, you need a plain channel instead, not the SH version.

14 gauge is the standard structural strut thickness used for conduit racks, trapeze hangers, and equipment supports, as opposed to the lighter gauges sold for light-duty and shelving work. Span between supports is what governs your allowable load, so set your hanger spacing from the load table for the run you are building rather than from the gauge alone.

Yes, the 120 inch stick is meant to be cut down on site. One thing to plan for with 316 stainless: cut ends expose bare metal, so use a cutting wheel dedicated to stainless to avoid embedding carbon steel particles that will rust later, and treat the cut ends if the run is in a wash-down or marine location.

The manufacturer part number is B24SH-120SS6, from the Eaton B-Line strut channel series. Reading it: B24 channel profile, SH hole pattern, 120 inch length, SS6 for type 316 stainless.