Pick N PluckTM with convoluted lid foam Watertight, crushproof, and dustproof Open cell core with solid wall design-strong, light weight Comfortable rubber over-molded handle Easy open double-throw latches Stainless steel hardware and padlock protectors Automatic Pressure Equalization Valve that balances interior pressure, keeps water out O-ring seal Available with foam (WF) or no foam (NF), with logo (WL) or no logo (NL), including with panel frame (PF).