Internal Post Plugs & Flush-Mount Caps
The ultimate low-profile solution for a streamlined perimeter. At Fence Supply Inc., we carry a specialized selection of internal fence post plugs designed to seal your terminal and gate posts from the inside out. Our inventory features rust-proof aluminum and high-impact plastic plugs that provide a permanent barrier against rain, ice, and debris. By sealing the hollow center of the pipe without adding bulk to the exterior, these plugs prevent internal oxidation while maintaining the clean, architectural lines of your framework. Whether you are finishing a 2-3/8″ gate post or outfitting a custom railing system, our flush-mount plugs offer a professional, “hidden” finish that keeps your fence structurally sound and visually uncluttered.