Over pack shipping cartons for shipping steel five-gallon pails (Drums must meet D.O.T./UN hazardous shipping regulations.) These over pack cartons are approved by the National Safe Transit Committee and conform to UPS Hazardous Materials regulations. They are tight-fitting, regular slotted corrugated cartons with tray pads and are marked: Inner Packages Comply with Prescribed Specifications in accordance with 49 CFR (HM 181) IATA/ICAO. (Drums must meet D.O.T./UN hazardous shipping regulations.) Includes a 275# Test Corrugated Cardboard Carton and two double-wall, 275# test corrugated tray pads.