RSDUNs or Flexible Intermediate Bulk Containers (FIBCs) are an economical and efficient way to package, store and handle products. Every RSDUN has four loop handles on each end for easy handling, filling and dispensing. Dependent on size, each RSDUN can hold approximately 2000-3500 pounds of material. The RSDUN differs from a Bulk Bag due to the fact it is UN regulated and comes with a liner.