ILP CV4-5L-U-40-FRAL Cavern Stairwell LED Light 4000K, 36 Watt, 5263 Lumens, Frosted Acrylic Lens

The ILP CV4-5L-U-40-FRAL Cavern stairwell LED luminaire provides robust, long‑life illumination for indoor stairwells and transitional spaces. This 4‑foot version is designed to replace or cover existing footprints with its 7.5-inch width, and it can be mounted on either walls or ceilings to adapt to the architectural layout. It operates from a universal 120–277V supply and features a 36‑W light engine that delivers up to 5,263 lumens, yielding a high efficacy of approximately 145 lm/W. The LED source maintains a color temperature around 4000K with a color rendering index greater than 80, which supports clear, task‑oriented visibility in commercial or industrial settings. An impact‑resistant frosted acrylic lens protects the light while helping to diffuse glare and provide even illumination along stair runs.

The fixture is built with a .060‑inch aluminum Cavern housing and cast aluminum end plates, finished in white with an option for custom colors. A post‑paint finish and the option for tamper‑resistant screws add durability in areas requiring enhanced security. The design includes a 0–10V dimmable driver (full range to 10%) for compatible lighting control scenarios and can be ordered with an integral emergency battery backup for backed‑up operation during power interruptions. The product is UL‑listed for damp and dry locations and carries a 5‑year warranty, underscoring its suitability for commercial facilities. It is also DesignLights Consortium Premium qualified, a credential that signals energy‑efficient performance within approved lighting designs.

This luminaire supports practical deployment in stairwells where quick maintenance access, reliability, and consistent light levels matter. When planning installation, consider mounting orientation (wall or ceiling) and the available voltage drive (noting 120–277V compatibility). The unit is sized and packaged for standard installation practices, and its frosted lens helps reduce hotspots while maintaining clear line‑of‑sight illumination along stair flights. For facilities requiring lighting during emergencies, the optional integral battery backup provides a safety‑critical feature without adding external components.

Features:

• 2 ft and 4 ft stairwell configurations
• 7.5? width to cover existing footprints (no painting)
• Wall or ceiling mount
• White standard finish with optional custom colors
• Ultrasonic sensor option for extended sensing
• Frosted acrylic lens for impact resistance and diffusion
• High efficacy up to 157 lm/W
• 4000K CCT, CRI >80
• 0–10V dimmable driver (100%–10%)
• Universal voltage 120–277V
• Optional integral emergency battery backups
• ETL listed for damp & dry locations
• DesignLights Consortium Premium Qualified
• 5 Year warranty