The CRG1X4 series by Certolux is a specification-grade, IC-rated LED luminaire which provides a cost-effective Cleanroom lighting solution. The model 3522 is designed as a lay-in unit. The housing flange facilitates easing sealing to the ceiling grid. It is suitable for ISO Class 5 - 8 Cleanrooms. For use in wet locations, insulated ceilings. NSF/ANSI 2 Food Zone, Splash Zone and Non-Food Zone Applications (see ordering key).