Hotbox 30 Asphalt Melter Hot Rubberized Crack Sealant Driveway Pavement Roof Repair Optimal Efficiency In stock. Ships next biz day. 30 gallon capacity. Compatible with 30lb and 50lb crackfiller blocks. Optimized efficiency with built-in heat-guide. Shorter heatup time. Professional equipment for asphalt crack repair Manufacturer's Lifetime Warranty