




Our Plastic Flat Square Cap made from high-quality polypropylene is specially designed for square fence posts and pipes. It provides excellent protection against rain, sun, ice, and snow, effectively preventing internal rust and decay. Additionally, it neatly conceals the post’s cut edges, enhancing the fence’s overall appearance and giving it a polished, refined look.
Manufactured by Sinotop Fence, this polypropylene cap boasts superior strength, impact resistance, weather durability, and UV protection—qualities that outperform many common plastics and metals on the market. It maintains its shape and color even under harsh environmental conditions, ensuring long-lasting, reliable protection.
Functionally similar to our Plastic Round Cap Polypropylene and Fence Pipe Plastic Rectangular Cap, this flat square cap features a unique multi-threaded internal design that guarantees a secure, tight fit on the post. This design prevents the cap from loosening or falling off, even in strong winds, providing a stable and dependable seal at the top of your fence posts.
To accommodate diverse project requirements, we offer a wide range of standard sizes for our polypropylene flat square caps. Moreover, our experienced design and production team is equipped to provide customized solutions, ensuring an ideal fit tailored to your specific needs.

| Model No | Tube | CTN |
| STFA043001 | 16 X 16 X 1.2-1.6 | 1000 |
| STFA043002 | 19 X 19 X 1.2-1.6 | 1000 |
| STFA043003 | 25 X 25 X 1.2-1.6 | 1000 |
| STFA043004 | 30 X 30 X 1.2-1.6 | 1000 |
| STFA043005 | 40 X 40 X 1.2-1.6 | 500 |
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| Plastic Rectangular Cap | Plastic Round Cap |
For small orders, sample orders, or air shipments, T/T in advance (telegraphic transfer-bank order). We can also offer preferential and flexible payment terms to our customers to establish a win-win partnership. Other payments: L/C, D/A, D/P, MoneyGram, Paypal, or Escrow. There can be minor variations in different places.
We offer the following post-purchase services following your payment:
We have the best after-sales staff around. Please Contact Us as soon as possible if you experience any after-sale issues. We’ll get back to you as soon as we can with a satisfying answer.