Flat Top Steel Post Cap (Multiple Post Sizes Available)

Heavy-Duty Flat Top Steel Post Caps – Protection for Every Post Size

Protect your fence and deck posts with the ultimate in American-made durability. Unlike thin plastic or flimsy aluminum caps that crack over time, our Flat Top Steel Post Caps are hand-welded from thick, structural steel to provide a lifetime of protection and a clean, modern aesthetic for your outdoor space.

Custom Fit for Every Project We understand that not all "4x4s" are created equal. That is why we offer a full range of sizes to ensure a precision fit for both standard and rough-cut lumber:

• Nominal Sizes (Standard Lumber): Fits standard posts found at most lumberyards.

  • Nominal 4x4 (Actual 3.5" x 3.5")

  • Nominal 4x6 (Actual 3.5" x 5.5")

  • Nominal 6x6 (Actual 5.5" x 5.5")

• True Sizes (Rough-Cut/Hardwood): For the builder using full-dimension timber.

  • True 4x4 (Actual 4" x 4")

  • True 5x5 (Actual 5" x 5")

  • True 6x6 (Actual 6" x 6")

• Custom sizes are available upon request—if you don't see your size, just ask!

Why Choose Madison Iron and Wood?

• Veteran-Owned Quality: Every cap is hand-welded and inspected in our Madison, Indiana shop.

• Superior Finish: Finished in a high-quality, baked-on powder coat with UV inhibitors to prevent the "chalking" or fading common with cheap paints.

• Easy Installation: Each cap comes pre-drilled on two sides with matching powder-coated screws included for a seamless look.

• Optional Zinc Primer: For maximum rust protection, we offer an optional zinc-rich primer—a "sacrificial shield" that prevents corrosion even if the finish is scratched.

Technical Specifications:

• Material: Heavy-Duty American Steel.

• Color Options: Available in Antique Copper, Semi-Gloss Black, White, and 11+ other premium finishes.

• Origin: Made in the USA.

Note: Please measure your post dimensions before ordering to ensure the perfect fit for your specific lumber.