Signature Flat Post Cap
Finish your railing installation with the Signature Flat Post Cap, a clean and versatile solution for topping 3″ × 3″ metal railing posts. Its simple flat-profile design provides a streamlined appearance that pairs effortlessly with modern, traditional, and contemporary railing styles. Designed for use with Atlantis Rail’s NOVA railing system, it can also be used with compatible railing systems and a variety of infill options.
Built to deliver both style and durability, the Signature Flat Post Cap features a textured powder-coated finish available in black, bronze, and white. The range of color options makes it easy to coordinate your railing posts with decking, trim, architectural finishes, or other system components. The durable coating is designed to withstand outdoor exposure while maintaining a clean, finished appearance over time.
Whether you’re installing a new railing system or updating an existing one, the Signature Flat Post Cap provides a straightforward way to complete the top of your railing posts. Its versatile design and durable finish make it well suited for residential decks, balconies, porches, stairways, and commercial railing applications.
For projects requiring a refined yet understated finishing detail, the Signature Flat Post Cap combines practical performance with a timeless profile, making it a versatile choice for 3″ × 3″ metal railing posts. Matching Signature Post Skirt available. CLICK HERE to view the color chart.
MATERIAL: Powder-coated Metal

| ITEM | LENGTH | WIDTH | HEIGHT | COLOR | WT (LB) |
| A0906-PC33-5A-BK | 4.17˝ | 4.17˝ | 1.60˝ | Black | 1.20 |
| A0906-PC33-5A-BZ | 4.17˝ | 4.17˝ | 1.60˝ | Bronze | 1.20 |
| A0906-PC33-5A-WH | 4.17˝ | 4.17˝ | 1.60˝ | White | 1.20 |
RELATED PRODUCTS
NOVA Cable Railing
The NOVA System features powder-coated aluminum posts, guardrails and optional foot rails and horizontal cable infill.
NOVA I 36” Universal Post
The NOVA I 36” Universal Post is specifically for use on 36” height railing on level section. It is designed to be used as an end post or mid post.
Signature Stepped Flat Post Cap
Signature Stepped Flat Post Cap delivers a refined finish for NOVA and other railing systems, with durable powder-coating available in black, bronze, or white.
Signature Post Skirt
Two-part Signature Post Skirt for easy installation and a finished look. Available in black, bronze, and white with a matte textured finish.


