Tripp Lite's SR42UBSD SmartRack enclosures are designed for secure, high density server and networking applications in IT environments. Same features as our original depth enclosure except in a smaller footprint for tight areas. Vendor-neutral square hole/cage nut mounting for guaranteed compatibility with all EIA-310-E compliant 19" equipment. Enclosures ship fully assembled for rapid deployment on heavy-duty casters. Toolless mounting slots and adjustable mounting rails. Lightweight modular doors and side panels provide safe, convenient service access. Integrated baying tabs facilitate combining enclosures in rows. SmartRack enclosures hold up to 3000 lbs and support cooling, cable management, power distribution and monitoring features. Perforated doors permit massive front to rear airflow. Enclosures are fully compatible with hot-aisle / cold-aisle data center configurations. Meets all enclosure requirements towards PCI DSS (Payment Card Industry Data Security Standard) Compliance.