Gate End Post
This post has a heavier wall then standard posts to support the weight and slamming of gates. "End" means it also serves as an end post. It has holes routed in one side only for a section's rails to slide into it. Most gate posts would be gate end posts. The other type of gate post is a gate blank post. The blank post has no routed holes for rails and would be used usually as a latch post next to a house, wall or other place where a gate ends a line of fence.