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The Trex Transcend Composite Flat Post Cap – 4″ x 4″ provides the perfect finishing touch for Trex Transcend® deck posts and post sleeves, delivering a clean, low‑maintenance aesthetic for railing systems. Engineered to sit atop a 4″ x 4″ composite post sleeve, this flat post cap completes the look of your deck railing while protecting the top of the sleeve from moisture and wear. It coordinates seamlessly with Trex Transcend railing colors and profiles, making it easy to match with existing deck components for a cohesive design.
Composite construction ensures the cap resists rot, splitting, and warping without the routine upkeep required by wood, and it never needs painting or staining. Designed to work with all Trex railing lines that accept 4″ x 4″ post sleeves, this post cap is a reliable choice for both new deck builds and retrofit upgrades.
Key Specifications:
Fits 4″ x 4″ composite post sleeves for a finished top‑of‑post look
Flat top design for a modern, streamlined appearance
Available in multiple Transcend colors to coordinate with railing and decking
Weather‑resistant composite material that resists rot, splintering, and fading
Ideal for contractors and homeowners alike, this flat post cap enhances the visual appeal of deck railings while extending the life of post sleeves with no painting, sealing, or sanding required.
Composite decking stands apart from wood thanks to features that make it easier to own and maintain.
Enjoy long-term durability that outperforms traditional wood decking.
Choose from a wide range of colors to create a look that’s uniquely yours.
Built with advanced materials that resist rot, moisture, and warping.
With simple, occasional cleaning, your deck stays looking clean and polished
Your deck starts with a great plan. Use our decking design tool to explore layouts, materials, and finishes in a realistic, easy-to-use experience. See what’s possible and move forward with confidence—no surprises, just better builds.
Great – we love ‘em. Our team of experts has plenty of experience with tailoring a customized project. Talk to one of our associates on the floor, give us a call, or drop us a line to get started.
For Small Boxed Items:We offer a 1-2 day turnaround for small boxed items and a tracking number will be provided to keep you updated on the status of your delivery.
For LTL Freight (Common Carrier) Items:We use LTL freight for safe and efficient delivery. Your order will be scheduled for delivery, and it's important to note that for decking deliveries, a homeowner needs to be on hand to unload the product. This ensures a smooth and hassle-free delivery process. Rest assured, we're here to make the process as convenient as possible for you.
If you need it, we’ll get it! As your one-stop deck shop, you’ll find everything at your fingertips, or we’ll get it shipped out to you anywhere in the continental U.S.
The Deck Store takes the guesswork out of pulling your project together. Stop by our local retail store in Knoxville, or enjoy hassle-free online ordering.
Our customers are our #1 priority, and we’re dedicated to bringing you quality decking supplies. Our customer promise is to carry the highest quality products, so you can enjoy your deck or dock for years to come with minimal maintenance.
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