Distribution boxes are assigned an IP (Ingress Protection) rating, which indicates their resistance to dust and water. While the exterior might appear as a basic enclosure, the internal engineering ensures electrical safety in harsh environments. A waterproof distribution box should be used for open places wherein water condensation and corrosion are concerns as it can withstand harsh or unfavorable environmental conditions. They are constructed usually of advanced materials meant to last longer and protect the contents. It helps you avoid short circuits or electrical fires.