12 Gauge Slotted Strut Channel PS 100 EH has slots on the back side for use with 1/2" threaded rod and fasteners. The slots are an advantage during installation, eliminating the need for field drilling traditional slotted channel while retaining the adjustability of traditional slotted channel. This slotted option is popular because its adjustable and accommodates large diameter threaded rod yet has modest load capacity loss versus the solid version. It has 85% of the capacity of the solid version of the profile. This channel is commonly used for trapeze supports, anchoring to concrete, ceiling grids, pipe, conduit, duct and cable tray supports, racks, and other general framing. For application examples, refer to our Application Showcase. Our PS 100 EH is available in the following finishes: Pre-Galvanized (PG), Hot-Dip Galvanized (HG), Plain (PL), Green (GR), Zinc Dichromate (ZD) and Stainless Steel (SS).