Safety Drum Funnel, w Self Closing Cover, 6 in Brass Flame Arrestor, 2 in Drum Bung, Red ORS NASCO Two independent sensors Features an economical Two independent sensors Features an economical lens for the consumer welder Solar powered Features variable shade 9 13 Designed for use in 600 volt dry location applications requiring both high mechanical strength and resistance to high temperatures The thermosetting silicone pressure sensitive adhesive provides an increased bond stay open lid Self closing cover has a fusible link that melts at 165º F to shut the cover automatically in case of fire Accepts lock to prevent unauthorized access Fits into a 2" bung on a 30 and 50 gallon drum Wide mouth opening with hinged