3SKB 30" Shock Racks will keep your equipment safe and working while you travel in harsh conditions where your case and devices may be exposed to rough weather, mistreatment, and abuse. These cases are roto-molded to provide excellent strength, durability, and protection. The hinged doors are user friendly with a gasket seal that makes the case water resistant and keeps your gear dry! The supplied caster kit ensures that transport has never been easier?no more heavy lifting and carrying. For efficient and secure transport, these Shock Racks stack perfectly even with the casters mounted! These 30" deep rack models are suitable for large IT equipment such as servers, back up devices, and power supplies. Additional applications are in military, security, outdoor, broadcast and many more markets.