4-Hole Single Channel Post Base - Electro-Galvanized is a post base designed to fasten Strut Channel to the floor. The bottom plate of the strut channel post base pairs with anchor bolts to secure it to the ground. Post bases mounted using the correct anchors gives the channel structure more stability and is a long-term solution used for mounting a number of things like HVAC, shelving, and more. Electro-Galvanized Steel should be used in interior applications where conditions are dry, and humidity is low.