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 5 percent Dimming Standard; Up to 40,000 Lm Delivered @ over 130 Lm/W; Frost Acrylic Lens Standard; B.A.A. Compliant & Made in the USA by a Family Owned US Corporation