Hoffman CDR3P12, Din Rail Kit, Din3-T35x7.5, Fits 12.00, Qty 3, Steel/ZincDIN3 Rail Kits supply mounting surfaces for DIN mount snap-on devices in either DIN 1, DIN 3 or CENELEC styles. Rails attach vertically or horizontally to rear collar stud or to mounting channels. Kit includes three rails and mounting hardware. . Product Specifications BRANDHoffman® MANUFACTURERS PART NUMBERCDR3P12 CONSTRUCTIONSteel DESCRIPTIONDin3 Rail Kits COLORZinc FITS12 FITS CONCEPT ENCLOSUREWhen A or B = 12.00 in. (305 mm)