The CRTA series recessed LED cleanroom light is a robust and serviceable fixture designed for demanding healthcare, laboratory, and cleanroom environments. Engineered for installation within walkable composite ceiling systems, it offers secure support and long-lasting reliability. The fixture is compatible with finished ceiling panels in 2-inch, 3-inch, and 4-inch thicknesses and is rated to withstand an impressive 800-pound static load without damage, demonstrating exceptional structural integrity. Its precision-engineered overlapping gasketed door frame provides a complete seal between the cleanroom and ceiling plane, maintaining the integrity of controlled environments. Additional gaskets positioned at the lens and top cover ensure a secondary layer of protection against dust, liquid, and vapor intrusion, preventing contamination and ensuring safe operation even under frequent and rigorous cleaning cycles.
The CRTA series meets stringent cleanroom and safety standards, making it ideal for critical applications in hospitals, healthcare facilities, and containment laboratories. It is ETL certified for wet locations, rated IP65 for dust-tight and water-resistant performance, and cleanroom classified to ISO-3 standards. The fixture has been rigorously tested in accordance with ASTM-E72 and ASTM-E2322 standards, verifying its ability to endure heavy loads and maintain structural stability in walkable ceiling configurations. Available in 1x4, 2x2, and 2x4 sizes, this specification-grade luminaire delivers between 3,500 and 25,000 lumens depending on configuration, with options for 80+ or 90+ CRI to ensure color accuracy and visual comfort.
The fixture housing is constructed from precision-formed and welded 16-gauge cold-rolled steel for superior strength and durability. A single top-surface knockout is provided for power entry, while closed-cell neoprene gaskets create a secure seal between the housing flange and the ceiling surface. The access door, also made from 16-gauge steel with TIG-welded corners, features a recessed handle and reinforced structural brackets that allow it to safely support walking loads on the ceiling. Its inset one-piece design and continuous neoprene gasket ensure an airtight seal when closed, preventing the entry of contaminants. Optional textured finishes are available to meet aesthetic or environmental preferences.
The overlapping lens frame continues the fixture’s focus on sealing and cleanliness. Fabricated from 16-gauge cold-rolled steel with TIG-welded corners, it includes a high-performance neoprene gasket that seals the door frame tightly to the housing and ceiling. The lens itself is 0.125 inches thick, made from impact-resistant, high-diffusion acrylic that delivers uniform, symmetric light distribution. The lens surface is smooth and easy to clean, ensuring compatibility with disinfecting agents commonly used in sterile environments. All electronic components are serviceable from above the ceiling, maintaining the integrity of the cleanroom below by eliminating the need for roomside access or hardware exposure.
Inside, the LED modules provide high efficacy, stable lumen performance, and precise color consistency, with options for 3000K, 3500K, 4000K, and 5000K color temperatures. The standard color rendering index is 80+, with an optional 90 CRI for tasks requiring enhanced visual accuracy. Optional amber LED arrays are also available, either independently or combined with white LEDs, for specialized cleanroom or laboratory applications. Each LED board is field-replaceable and designed for longevity, offering an L70 lifetime exceeding 60,000 hours.
The CRTA series employs a constant-current, programmable driver with smooth 0-10V dimming down to 1%. Operating efficiency exceeds 85%, with total harmonic distortion under 10%. The driver meets FCC Part 15 requirements for electrical safety and electromagnetic compatibility, and configurations are available for 120–277Vac or 347Vac operation at 50/60Hz. Internal emergency battery drivers, where specified, are also accessible from the walkable ceiling for convenient service without contaminating the cleanroom environment.
A five-stage pretreatment process precedes the application of a durable gloss white polyester powder coat finish, providing corrosion resistance and long-term durability. An antimicrobial version of the coating is available for additional protection against bacterial growth, while a #4 satin-polished brushed stainless-steel door frame finish can be specified for enhanced durability and aesthetics in specialized environments.
Installation of the CRTA recessed cleanroom fixture is straightforward and secure. It is mounted within precut ceiling panel openings, with conduit entry provided through a ½-inch trade-size access hole. Hazardous location models include a ½-inch threaded hub for wiring connections, and an optional sidewall conduit entry configuration is available to accommodate site-specific requirements.
The CRTA series meets a wide range of certifications, ensuring compliance with the most rigorous standards. It is ETL listed for recessed, non-IC-rated ceilings and wet locations under covered areas, NSF2 certified for non-food and splash zones, and IEC60598 IP65 certified for protection against water and dust ingress from below. Additionally, it is ISO 3–8 cleanroom classified and optionally certified for Class I, Division 2, Groups A, B, C, and D hazardous locations. This combination of structural strength, sealed performance, and electrical versatility makes the CRTA series a premier choice for lighting in cleanrooms, healthcare facilities, and other critical containment environments that demand safety, serviceability, and uncompromising reliability.
https://viscor.com/products/crta
