MFG ESD Stack Only Fiberglass Lids, MFG ESD Container Covers protect contents from damage or contamination, and containers may be stacked when lids are used. MFG ESD cover provides optimal product protection, exceptional weight-carrying capability, and superior physical properties over thermoplastic and corrugated products. They will not bend or sag under heavy loads and can be readily integrated into automated applications. MFG Fiberstat stacking containers ensure complete protection from electrostatic discharge for the product's life. They may be used consistently in temperatures ranging from -60° to 250° F (-51° to 121° C) and are resistant to cutting oils, greases, solvents, mild acids, and alkaline solutions within a pH rating of 3.0 – 10.0. Stacking containers are easily cleaned in hot water or steam with standard detergents.