Surface Volumetric Lighting

The RT5X series is designed for surface-mount applications where comfort, aesthetics and energy savings are important. Provides volumetric lighting for applications such as offices, schools, hospitals, retail and numerous other commercial applications. Available in 2'x4', 2'x2' and 1'x4' configurations.


Two-lamp configuration provides 33% energy savings when compared to a common three-lamp T8 system.

Low-profile 3-5/8" depth.

Two-piece refractor system uses the combination of diffusing optical film and precisely extruded prisms to efficiently diffuse light.

Reflector includes micro-facets that echo the frequency of the prisms in the refractor, providing a quiet appearance in the ceiling.

Lamp accessed by squeezing refractor to release from retention tabs.


Delivers volumetric lighting by filling the entire volume of space with light, delivering the ideal amount to walls, cubicles, work surfaces and people. Luminous characteristics are carefully managed at high angles to deliver just enough intensity to provide the volumetric effect.


A wide variety of ballast configurations including set light output or step-level dimming. Step-dimming options allow the system to be switched to 50% power for compliance with common energy codes while illuminating both lamps.

Highly efficient programmed start electronic ballast, Class P, thermally protected, resetting, HPF, non-PCB, UL Listed and CSA Certified, sound rated A.

Premier F28T5 lamp with enhanced phosphors and 85 CRI. Ballast/lamp efficacy of 28T5 is 100+ LPW.

Ballast disconnect provided standard where required to comply with U.S. and Canadian electrical codes.

Product overview and specifications
Brand Name Lithonia Lighting
Color White
Color Rendering Index 80
Correlated Color Temperature 3000 K, 3500 K, 4100 K
Environment Indoor
Finish Gloss
Light Source Fluorescent
Listings CSA, NOM, UL
Mounting Type Surface
Product Type Surface Light
Series 2RT5SX, 2RT5X, RT5X
Shape Rectangular
Voltage Rating 120, 277, 347, MVOLT
Spec Sheets
A summary of the performance and other technical characteristics of the product.
File Type Document Title View
2RT5SX-2X2_PDF View
2RT5SX-2X4_PDF View
2RT5X-2x2_pdf View
Technical Files
Installation documents, building information models, etc.
File Type Document Title View
RT5SX-Replacement-Parts_pdf View
Download brochures, sell sheets, photometry files and other sales tools.