"2 INCH AND 3/4 INCH FM-APPROVED NYLON PLUGS WITH BUNA-N SEALS MELT TO VENT PRESSURE AND PREVENT DRUM BURSTING IF FIRE OCCURS;NITRILE GASKET AND LOCKING MECHANISM COMPLETELY SEAL LID;LATCHING HANDLE EASILY OPENS AND CLOSES IN ON SIMPLE,SINGLE-HANDED OPERATION;REMOVABLE HINGE PIN;LID STOP ON HINGE KEEPS LID UPRIGHT WHEN OPEN;LATCH IS PADLOCKABLE"