Closed head drum cover. 23" drum cover fits 55 gallon closed head drums. Rigid, snap-on design constructed of high density polyethylene for excellent durability, will not crack or split when covering or uncovering drum. Resistant to most chemicals, acids and solvents. Dome shape prevents water or other contaminants from collecting on top of drum or cover. Measures 23-1/2" diameter by 5" height.