Avalon Cable Railing by RDI
What Is RDI Avalon Cable Railing?
RDI Avalon Cable Railing is a premium, architectural-style railing system made by RDI (Railing Design Innovations) that uses horizontal stainless steel cable infill between posts instead of traditional balusters. It’s designed to give decks, balconies, and stairways a clean, modern look with minimal sight obstruction.
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It’s one of RDI’s most popular railing lines because it combines strength, aesthetics, and durability.
Key Components
Typical Avalon cable railing systems include:
• Posts
Vertical support pieces (aluminum or steel) that anchor the railing to the deck or structure.
• Top & Bottom Rails
Horizontal rails that connect between posts and hold the cable ends.
• Stainless Steel Cables
Thin, strong cables that run horizontally between posts and create the infill.
• Optional Cap Rail
A decorative or functional cover rail (wood or metal) that sits atop the system as a handrail.
Main Features
✔ Minimal Obstruction View
Because the infill is thin cable instead of bulky balusters, it offers a nearly unobstructed view — great for waterfront or scenic decks.
✔ Modern Aesthetic
Clean horizontal lines and slim profiles give a contemporary look.
✔ High Durability
Stainless steel cable resists corrosion, and aluminum posts won’t rust.
✔ Customizable
You can choose:
Powder coat colors (black, white, bronze,)
Cable spacing
Cap rail styles (flat, round, wood)
How the Cable System Works
- Posts are set along the deck edge at the right spacing.
- Top and bottom rails attach between posts.
- Cables are fed horizontally through holes in the posts or channels.
- Tensioners at one end pull each cable tight so it stays straight and firm.
- Proper tension is critical — it keeps the cables from sagging and maintains the sleek look.
Installation Overview
- Posts anchored to the deck
- Rails cut and installed between posts
- Cables pulled through posts
- Each cable tightened with turnbuckles or tensioners
- Trim end caps and finish hardware added
- Installation is more complex than simple wood railings but far easier than field-threading individual cables without pre-cut panels.
Pros
- Excellent sight lines
- Stylish modern design
- Long-lasting materials
- Can increase home appeal/value
The Avalon cable rail system by RDI is a total solution including a comprehensive range of posts, beams, cables and fittings in multiple sizes and lengths and is code approved for both residential and commercial applications. The cable rail system has the same quality you are used to with our other Avalon products. The posts are made of durable-powder coated aluminum that is AAMA certified and rust proof. With over 10,000 hours of salt-spray testing, Avalon performs at more than 3 times the industry standard. Cable rail is a sleek, sophisticated style that gives consumers a more modern, on-trend look for their deck or patio.
POSTS
Pre-Drilled Posts - Choose from end - mid - corner and stair posts. Available for a 36" or 42" rail height.
BEAM KIT
Top rail beam kit - Choose from 6' or 8' stair and level
TOP RAIL
Finished Hand Rail Options - We have 3 profiles available to choose from in 6' or 8' lengths
1/8" CABLE PACKS
Pre-packaged cable kits - Cable packs available from 10'-70' lengths
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