Rated IP66; Suitable for ISO 3-9 Cleanspaces; Suitable for 209E class 1-100,000 Cleanspaces; ETL listed for Wet Locations; One piece overlapping doorframe; Robotically seam welded housing; 0-10v 1 percent Dimming Standard for most configurations.; Narrow Spectrum 590nm True Amber LEDs; White / Amber Separately Controlled Circuits; B.A.A. Compliant & Made in the USA by a Family Owned US Corporation