The SKB 3i-4U11-W is a rugged, 4U injection-molded rack case designed for professionals who demand durability, mobility, and reliable protection for their gear. Constructed from ultra high-strength polypropylene copolymer resin, this case features a compact 11" rack depth and is completely waterproof, dustproof, and resistant to impact and corrosion. Its built-in wheels and retractable pull handle make transport effortless, while front and rear rack rails with rack-to-rail depth of 10.7" allow for versatile gear mounting. Ideal for audio engineers, AV technicians, and touring professionals, the 3i-4U11-W combines military-grade construction with portability in a sleek, TSA-approved design.