Protect and extend the life of outdoor wooden posts with the Simpson Strong-Tie 4 in. H x 3.56 in. W 16 Ga. Galvanized Steel Post Cap. Crafted from heavy-duty galvanized steel, this cap is built to withstand the elements and keep your deck, fence, or railing posts looking clean and finished year after year.
Fits standard 4x4 posts with lasting protection
External dimensions of 4 in. high and 3.56 in. wide are designed to top standard 4x4 posts (actual post size ~3.5 in square). It provides a snug, secure fit that shields the post from moisture and debris, helping to prevent rotation, swelling, and decay at the exposed top.
Durable, corrosion-resistant construction
With 16-gauge galvanized steel, this post cap delivers robust protection against rust and corrosion in outdoor environments—from coastal salt air to heavy rains. Unlike caps that wear down or warp, this cap maintains its shape and seal over time, keeping your posts looking sharp and protected.
Practical benefits that matter
- Moisture barrier: Seals the top of the post to deter water intrusion that can lead to rot and deterioration.
- Low-maintenance finish: No painting or staining required; install and enjoy durable, weather-ready protection.
- Weather-ready design: Built to endure sun, rain, and temperature fluctuations that decks and fences routinely face.
- Clean, finished appearance: Provides a neat, professional look to outdoor structures while reinforcing structural integrity.
Ideal uses and applications
Perfect for decking, railing systems, fences, pergolas, and other outdoor posts that require a reliable shield at the top. This post cap helps maintain the integrity of your project by protecting the vulnerable top from moisture, sun exposure, and minor impact over time.
Simple installation and smart choice
Designed for straightforward installation with standard exterior fasteners. Align the cap over the post and secure using appropriate screws or fasteners to create a wind-resistant, durable cap that stays in place through seasons of use.
Trusted brand for lasting results
As a Simpson Strong-Tie product, this post cap combines engineering precision with practical, real-world utility. It’s a focused upgrade that deliversProtection, longevity, and a polished finish to your outdoor woodwork.
