Lamps | Dimmable: Non-Dimmable ; Operating Temp: -20c (-4f) to a Maximum of +45c (+113f) ; Nsf Approved: Yes - Approved | The I-Beam Ibz Is an Energy-Saving Fluorescent High Bay Solution That Is an Ideal One-for-One Replacement of Common Metal Halide High Bay Systems. Its Configurable Design Supports Many Options and Accessories That Would Satisfy Almost Any High Bay Applicat | Use Through Knockout to Connect Box to Conduit Coupling; Use With a Locknut to Connect Two Boxes Side by Side or Back to Back; Use With a Locknut to Connect Fixture Housings in Continuous Runs; Rigid Conduit Threads (Nps)Furbay Electric Supp