Trex Select® Railing

Elevated spaces don’t have to come with an elevated price tag. Choose affordable Select railing made from high-performance composite or aluminum.

All Railing

Classic
T-Rail
Aluminum

Price Range

Limited Residential Warranty

Select® Classic Railing

The simple choice for your outdoor space.

Where to Buy Find a Builder

Color: Charcoal Black Balusters & Classic White Rails

Rocky Harbor Decking with Black Aluminum Railing

Price Range

Limited Residential Warranty

Select® Composite T-Rail

The ideal blend of composite performance and vinyl affordability.

Where to Buy Find a Builder

Color: Charcoal Black Balusters & Classic White Rails

Price Range

Limited Residential Warranty

Select™ Aluminum Railing

A simplistic style that can complement any outdoor space at an affordable price.

Where to Buy Find a Builder

Color: Charcoal Black

select aluminum horizontal railing partial deck with stairs

select bronze traditional aluminum horizontal railing

select black modern aluminum horizontal railing

Discover Why Trex Select® Railing is the Best Choice for Deck Railing

Designs for Every Style

From sleek modern to timeless classic, we're here to make your outdoor space uniquely yours.

Easy-to-Use Tools

Trex’s design tools let you plan, price, and explore railing styles from home—quick and easy.

Installation Made Simple

With step-by-step guides and Trex Academy resources, we’ve got everything you need to DIY.

Peace of Mind

With Trex railings, skip the painting and staining—just enjoy lasting beauty with 15–50 year warranties.

Personalize Your Look

Choose from curved railings, cocktail rails, lighting, or ADA options to make your space just right for you.

Your Project, Our Priority

Our Customer Care Team is here to support you every step of the way throughout your deck project.

Railing Anatomy

Click on the hot spots below to explore the core components of a railing system.

Composite Post Sleeve

A post sleeve slides over your wood post, protecting it from the elements. Choose our durable composite option for ease of installation and long-lasting beauty.

Post Cap

Top off your railing with a post cap. Our caps provide a polished finish and add durability, protecting against weather and wear.

Post Skirt

A post skirt adds a finishing touch at the base of your post. Designed for elegance and protection, it hides unsightly gaps and enhances your railing's look. Opt for our skirts for seamless integration and aesthetic appeal.

Aluminum Post

An aluminum railing post is a vertical support used in railing systems to provide stability and structure. Resistant to rust and corrosion, our powder-coated aluminum posts offer strength without sacrificing a minimalist design.

Balusters

Balusters provide both safety and style to your railing. Whether you prefer square composite or round aluminum, our options offer superior durability and design versatility.

Top Rail

The top rail is the uppermost part of the railing system, providing support to the balusters and a secure grip for users. Choose our classic design for a timeless look or upgrade to the composite "T-top" rail for enhanced grip and comfort, blending functionality with style to elevate your space.

Bottom Rail

The simple, sturdy bottom rail is the backbone of your railing system. Our bottom rails provide essential support and stability, ensuring long-lasting performance.

Pre-assembled Panel

A pre-assembled railing panel is a railing kit that comes with balusters or an infill option already installed on the top and bottom rails, simplifying your railing installation process.

Infill Options
Posts & Post Components
Rails, Balusters & Infill Specs
Accessories

Classic Rail with Round Aluminum Balusters

Use for simplified, pre-designed rail applications.

View our Railing Guide to learn more.

T-Rail with Round Aluminum Balusters

Use for simplified, pre-designed rail applications.

View our Railing Guide to learn more.

T-Rail with Square Composite Balusters

Use for simplified, pre-designed rail applications.

View our Railing Guide to learn more.

All-In-One Post Sleeve Kit

Choose the all-in-one composite post sleeve kit in classic white to create a clean, classic smooth finish over your structural post.

Kit Includes:
1 composite post sleeve, 1 composite post cap, 1 composite post skirt in Classic White

Post Sleeve Kits are compatible with Trex Select Composite Railings only.

*Railing kits and brackets sold separately.

Post Sleeve

Each 4” x 4” and 6" x 6" post sleeve fits over a 4" x 4" pressure treated post or equivalent post mount.

6" Available in Classic White only.

4” X 4” X 39”/108” Actual External Dimension:
4.45” x 4.45” x 40” (113mm x 113mm x 101 cm)
4.45” x 4.45” x 108” (113mm x 113mm x 274 cm)

6” X 6” X 39”/108” Actual External Dimensions:
5.5” x 5.5” x 39” (139 mm x 139 mm x 990 mm)
5.5” x 5.5” x 108” (139 mm x 139 mm x 274 cm)

Post Sleeve Cap

12 per box. Cap topping each post is the decorative finish that also withstands the weather.

6” Available in Classic White only.

Actual External Dimensions:
4” x 4”: 4.55” x 4.55” (115 mm x 115 mm)
6” x 6”: 5.55” x 5.55 ” (140mm x 140mm)

Post Sleeve Skirt

12 per box. Finishing piece at the base of the post that covers any cuts where the decking and railing meet. Usually coordinates with the cap.

Actual External Dimensions:
4” x 4”: 4.55” x 4.55” (115 mm x 115 mm)
6” x 6”: 5.55” x 5.55” (140mm x 140mm)

*6" post sleeve skirts exclusively available in Classic White and are offered as a single piece (not pictured).

3. Classic Rail & Round Aluminum Baluster Kit - Horizontal/Stair

Includes top rail, bottom rail, round aluminum balusters, adjustable foot block, hardware pack.

Dimensions
6’ x 36” Classic Rail & Baluster Kit
8’ x 36” Classic Rail & Baluster Kit
6’ x 42” Classic Rail & Baluster Kit
8’ x 42” Classic Rail & Baluster Kit

*Actual lengths: 6’ Rail: 72” (171 mm); 8’ Rail: 96” (232 mm)

3. T-Rail & Round Aluminum Baluster Kit - Horizontal/Stair

Includes top rail, bottom rail, round aluminum balusters, adjustable foot block, hardware pack.

Dimensions
6’ x 36” Classic Rail & Baluster Kit
8’ x 36” Classic Rail & Baluster Kit
6’ x 42” Classic Rail & Baluster Kit
8’ x 42” Classic Rail & Baluster Kit

*Actual lengths: 6’ Rail: 72” (171 mm); 8’ Rail: 96” (232 mm)

3. T-Rail & Square Composite Baluster Kit - Horizontal/Stair

Includes top rail, bottom rail, square composite balusters, adjustable foot block, hardware pack.

Dimensions
6’ x 36” Classic Rail & Baluster Kit
8’ x 36” Classic Rail & Baluster Kit
6’ x 42” Classic Rail & Baluster Kit
8’ x 42” Classic Rail & Baluster Kit

*Actual lengths: 6’ Rail: 72” (171 mm); 8’ Rail: 96” (232 mm)