B-Line Eaton series strut channel, 1" channel height, 240" channel length, 1.62" channel width, 12 Gauge steel, SH hole pattern, B42 channel type, Pre

It's the shallow profile. The B42 channel measures 1 inch high by 1.62 inches wide, so it's half the depth of standard 1-5/8 by 1-5/8 strut. Use it where you need a lower-profile run against a wall or deck but still want the standard 1-5/8 inch channel opening so ordinary strut nuts and fittings seat in it. If your drawing calls for the deep 1-5/8 inch tall channel, this is not that part.

Pre-galvanized is a mill-galvanized coating applied to the steel before forming, which leaves the cut ends and punched edges bare. It's meant for dry indoor and protected areas, not sustained weather exposure, washdown, or corrosive environments. For exterior runs or damp mechanical spaces, specify a hot-dip galvanized or stainless channel instead of this pre-galvanized B42.

Yes. At 1.62 inches wide the B42 uses the standard 1-5/8 inch channel opening, so spring nuts, channel nuts, straps, and fittings made for 1-5/8 inch strut seat in the lips normally. The reduced 1 inch height only affects depth behind the opening, not the nut interface.

SH is the slotted-hole pattern, meaning the channel back is punched with slots along its length rather than being solid. That lets you bolt the channel straight through to studs, deck, or wall anchors at regular intervals instead of drilling on site, and gives you some adjustment along the slot. If you want an unpunched back for a cleaner look or maximum strength, you want a solid-back B42 instead of the SH version.

12 gauge is the standard structural thickness for strut channel and is what most conduit racks, trapeze hangers, and pipe supports are built from. What limits this particular piece is the profile: the B42 is 1 inch deep rather than 1-5/8, so it carries less load over a given span than a full-height channel of the same gauge. For long unsupported spans or heavy pipe, use the deeper channel or double up.

The catalog number is B42SH-240GLV from Eaton's B-Line series: B42 channel, SH slotted hole pattern, 240 inch length, GLV for pre-galvanized. Steel construction, 12 gauge.