Used Flexible Intermodal Bulk Containers (FIBC) include bulk shipping and storage bags with an approximate size of 48" x 48" 48" and a strength capacity in excess of 1,500 lbs. (may or may not have a bottom drop spout) The exact size, strength, drop spout details and prior use should be clearly stated. Used FIBC's may include many types of bulk bags including brand names such as Super Sacs.