4” x 4” Low Profile Post Trim by RDI
What It Is
This is a one-piece, low-profile vinyl post trim (sometimes called a trim ring or post skirt) designed to sit at the base of a 4×4 post or post sleeve — generally right where the post meets the deck surface. It gives a neat, subtle transition between the post and the decking, covering gaps, fasteners, or rough cuts for a more polished look.
Key Features
- Material: Weather-resistant vinyl, so it won’t rot, peel, or require painting — ideal for outdoor use.
- Design:Low profile (short height) trim that blends in subtly with the railing system without adding bulk.
- Fit: Made to fit over any true 4″ × 4″ post or a vinyl post sleeve, such as the RDI 4×4 sleeves.
- Sizes: Approx. 5.7″ L × 5.7″ W × 1.063″ H, sized to wrap around the post base.
- Colors: Often available in vinyl colors like White, Clay, and Sand to match or coordinate with your railing and decking.
- Made in the USA: Typical of RDI railing accessories.
What It Does
- Covers the joint between the post (or post sleeve) and the deck surface, hiding gaps, fasteners, and imperfections.
- Provides a clean, finished trim detail that makes your railing installation look more complete and professional.
- Works well with vinyl post sleeves (like RDI products) and most vinyl-clad railing systems because it’s low maintenance and matches the overall aesthetics.
DETAILS:
- Material: vinyl
- 3 colors to choose from: white, clay, and sand
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Measurements: 5.7”L x 5.7”W x 1.063”H
WHAT’S INCLUDED:
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1-piece base post trim (quantity = 1)
More details:
- Made in the USA
- Low maintenance
- Weather-resistant vinyl
- Fits over any true 4” x 4” post
About this product…
Post trims are pieces of material that wrap around the bottom of your beams or balusters in order to bridge the gap between your columns and your decking. Post trims can offer more cohesion or an aesthetically pleasing transition from the materials of your columns to the materials of your decking. If you’re working on a deck or porch project and are looking for a classic, understated or subtle style post trim, consider this vinyl option for a fraction of the hassle and cost of real wood. Not only is the vinyl option cost-effective, these products are crafted using weather-resistant vinyl, making this product durable and incredibly low-maintenance. Since these trims are one piece, you must slide the baluster over or through the existing trim. These trims do not work with balusters that are pre-existing, or already installed in your decking. Within minutes, you now have a polished looking trim fit for your beautifully finished deck. Plus, you’ll save yourself stress over service and maintenance of your RDI trims with their lifetime warranty.
4” x 4” Low Profile Post Trim Installation:
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Simply secure the trim into your decking, then slide the baluster into its center.
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Still have questions or need advice on ordering the right supplies for your project? Get in touch with Deck Expressions’ 24/7 customer service. We’re always ready to help.
