We have the largest selection of decorative post caps in the world. We promise you will find what you are looking for here! Made to look aesthetically pleasing and to lengthen the life of your post.

4x4 Post Caps

These post caps are made to fit a nominal sized 4"x4" post (3.5"x3.5" actual size). This is the most common sized post for fences, decks, and patios. Also, the perfect post to put an eye-catching post cap on!

4x6 Post Caps

These post caps are made to fit a nominal sized 4x6 post (3.5"x5.5" actual size). An uncommon size but definitely essential to our selection. If you have a 4"x6" post, Madison Iron and Wood is one of the only places you will find a decorative metal post cap that fits!

6x6 Post Caps

These post caps are made to fit a nominal sized 6"x6" post (5.5"x5.5" actual size). Another very common size post yet a hard-to-find post cap size.

True Sized Post Caps

These post caps are made for true sized posts. True sized posts are commonly aluminum, plastic, or rough-cut posts. The dimensions for true sized post caps are just that, true to size. This means a 4"x4" post cap is actually 4"x4".

Post caps are made to protect the top of your posts. It does this in many ways.

1. Post caps protect from water and ice from entering the top of the post.
2. Post caps protect from bugs entering the top of the post.
3. Post caps bind the grains of the wood together, so it doesn't fray over time.

For these reasons, post caps extend the life of your fence post, deck post, mailbox post... All of which can be very expensive, so you want to protect it at all costs.

Another reason to use a post cap is because they add a decorative touch to your post. Our post caps are designed with decorative finials to personalize your posts. Our customers love putting a touch of their own personality on a once boring looking structure.

To determine what size you need for your posts, you first need to determine if your post is nominal sized or true sized. If your post is nominal sized it will most likely not be an exact dimension, meaning a "4x4 inch post" is actually 3.5x3.5 inches. A true sized post would be exactly 4x4 inches. For more information, please view our "Difference Between Nominal and True Sized Posts" article.

We have provided imaged on each post cap listing to help you determine if you are ordering the correct size.

For more information, give our experts a call at (812)-748-2021.

Installing a Post Cap is simple. If you got the correct sized post cap for your posts, the cap should be able to just slide over the post. Our caps are made to fit snug so you may need to sand down the sides and corners of your posts.

All you need to do after that is use our color matching screws to secure the cap to the post. This will make sure the post cap never moves for any reason!

We provide a more in depth installation guide in each package!