One of the smaller steel drums that we stock is a 15 gallon open head steel drum. The cover on this drum is removable and it is a solid cover with no bungs or fittings in it. This drum is unlined, however, it does have a rust inhibitor. The body of the drum is black and the cover is white. The body and bottom of the drum are 0.5mm which is 24 gauge. The cover is 1.0mm which is 20 gauge. The closure on this drum is a square back 12 gauge lever lock ring. The drum stands approximately 25″ high and has a 14″ inside diameter and a 15″ outside diameter (over the lever lockring). The un rating on the drum is UN1A2/Y125/S.