Unit features the exclusive heavy-duty Flo-Master™ bulk bag massaging system with open pipe frames which promote positive material flow. The Flo-Lock™ discharge gate halts material flow for partial bag discharging, allowing the bag to be retied, removed, and reused. System features a Seal-Master™ bag spout chamber with “gull-wing” doors for optimal discharge spout access. The Sure-Seal™ bag spout sealing system allows dust-tight material discharge. Lower frame section features fork lift pockets to serve multiple discharge points.