Post Caps

A steel post is a hollow tube. Left open, it fills with rain, dirt and leaves, and the water can rust the post from the inside. A cap closes the top, protects the post end from knocks and makes the fence look finished. Caps do not add strength, but they help the posts last.

Measure the outside of the post: the diameter of a round post, or both sides of a square one. Then pick the cap for that size:

• Round PVC caps for 1-5/8", 2-3/8" and 3-1/2" posts, plus an inline cap with hooks for 2-3/8" posts.
• Square caps for 2-3/8" x 2-3/8" posts in PVC and in aluminum.
• A steel cap for 3" x 3" posts.

PVC caps are light, simple to fit and suit most residential and light commercial fences. Aluminum caps do not rust and give a crisp metal finish. The steel cap is the heaviest option, for the 3" x 3" post on security and industrial fences.

Some caps do more than close a post. The cap with a pass-through sits on a 2-3/8" post and lets a 1-5/8" rail run through it. The aluminum brace end cap closes a 1-5/8" tube. T-connectors join rails to the post top: 1-5/8" rails on a 2-3/8" post, 2-3/8" rails on a 2-3/8" post, and 2-3/8" rails on a 3-1/2" post.

Barbed wire arms for 2-3/8" square and round posts are listed here too, because they fit at the top of the post.

Fortress caps close the post against water and finish it in the same gloss black as the fence:

• A2 Commercial Aluminum: pressed dome cap for 3" x 3" posts.
• Athens Residential Aluminum: pressed dome cap for 1-1/2", 2" or 2-1/2" posts.
• Titan Industrial: line post cap and corner post cap for 3" x 3" posts.
• V2 Commercial: ball cap for 4" x 4" posts, poly cap for 2-1/2" x 2-1/2" posts, curved top line and corner caps for 2-1/2" or 3" posts, and a pressed dome cap for 2-1/2", 4" or 6" posts.
• Versai: ball cap and nylon cap for 2" x 2" posts, and a pressed dome cap for 1-1/2", 2" or 3" posts.

The caps slide or press onto the top of the post. Make sure the post top is clean and cut square, and on a Fortress fence use the cap made for your Fortress line and post size.

Count one cap for every post, and add T-connectors or pass-through caps where a rail meets a post. A size without a price on its product page is sold on request. Fenceweb delivers to every US state and to Canada.