Trex® 24V Under Rail Light

Create a clean, continuous glow beneath your deck railing with the Trex® Under Rail Light. Designed to mount along the bottom rail, this low-profile lighting solution adds soft, even illumination while keeping fixtures discreet and out of sight.

Available in 30-inch and 42-inch lengths, Trex Under Rail Lights can be field-trimmed for a more precise fit. They are compatible with a wide range of Trex railing systems and are built for outdoor performance with durable components, soy-free wire sheathing, and a UL Wet Location Listing.

Each light includes an 18-inch lead, aluminum mounting channel, and installation hardware. The system connects with the broader Trex 24VDC lighting ecosystem, making it easy to combine under-rail lights with compatible post cap lights, riser lights, splitters, wiring, and transformers.

Key Features

• Creates continuous lighting beneath the bottom deck rail
• Available in 30-inch and 42-inch lengths
• Field-trimmable for a customized fit
• Mounts directly to the bottom rail
• UL Wet Location Listed for outdoor use
• Soy-free sheathing helps minimize rodent attraction
• Durable construction for long-term outdoor performance
• Includes an 18-inch lead wire
• Includes aluminum mounting channel and hardware
• Works with the Trex® 24VDC lighting system
• Compatible with Trex riser lights, post cap lights, splitters, wiring, and transformers
• Backed by a 5-year limited warranty

Box Includes

• (1) Trex® Under Rail Light
• (1) 18-inch lead
• (1) Aluminum mounting channel
• Mounting hardware

Railing Compatibility

Trex Under Rail Lights are compatible with Trex railing systems except:

• Trex Signature® X-Series™ Railing
• Trex Signature® Glass Railing

Add Soft Lighting Beneath Your Trex Railing

The Trex Under Rail Light provides a subtle way to illuminate deck edges, stairs, and outdoor living areas without placing visible fixtures on top of the railing. Its trimmable design and integration with the Trex 24V lighting system make it a flexible option for creating a polished, finished lighting layout.