30 Gallon Direct-Fire Crack filling melter. Model DFM-30. Choose this melter as a great add-on to your sealcoat unit or just as a stand alone. This well built melter heats up to 30 gallons of direct-fire rubberized crack sealant in approximately 30 minutes. Included is propane burner. hose and regulator. Combine this with the Rugged/durable hand agitator and you have a melter that is "Ready to Work".