What is this product 4000lbs Baffle anti static bulk bags are U-panel baffle TYPE D bag made by SINOPACK for chemical powder storage. The bag is a Type D static dissipative FIBC: it is built with electrostatic dissipative fibres that release static charge to the surrounding air by corona discharge, so no ground or earth connection is needed during filling and discharging. Standard capacity is up to 4000 lbs at a 5:1 safety factor. The fabric is 100% virgin polypropylene, 5OZ