Self-closing drum Cover turns a drum into a fire-safe receptacle for combustible waste. Simply use a screwdriver and wrench to attach the cover to a drum. For added safety, a replaceable fusible-link assembly melts at 165°F (74ºC) to automatically allow spring-loaded cover to slam shut if there is a fire in the drum. Durable steel construction with powder-coat finish provides excellent chemical resistance.30-gallon (110L) cover will fit drums nominally 18-3/8" (467 mm) diameter.