ProX UltronX XM-4U — 4U Rack Airtight Water-Sealed ABS Case
XM-4U Overview
The ProX XM-4U is part of the UltronX series of professional rack cases, engineered for touring, broadcast, and system integration applications where gear protection under demanding conditions is non-negotiable. Constructed from Polypropylene Copolymer, the case is crush-resistant and built to withstand the rigors of repeated transport and deployment. A sealed ring design renders the case both airtight and watertight, providing a reliable environmental barrier against moisture, dust, and pressure changes. ATA and TSA approval makes the XM-4U a compliant choice for air freight and checked baggage workflows.
Despite its hard-case level of protection, the UltronX XM-4U is designed with a lightweight profile, reducing load-in fatigue and keeping shipping weights manageable for touring and production companies.
Key Features
- Polypropylene Copolymer Construction — Extremely tough, crush-resistant shell material that provides near-indestructible protection for rack-mounted equipment
- Airtight and Watertight Sealed Ring — Integrated sealing ring creates a fully closed environmental barrier, protecting against moisture, humidity, and airborne contaminants
- ATA/TSA Approved — Meets airline freight and TSA compliance standards for checked and air-cargo transport
- 4U Rack Capacity — Accommodates standard 4U rack-mount equipment for processors, amplifiers, signal routers, and similar gear
- Lightweight Design — Delivers hard-case protection without the weight penalty typically associated with traditional road cases
- Airline Friendly — Purpose-built for frequent air travel, reducing the risk of damage during commercial and cargo flight handling

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