The SR42UBEIS Industrial SmartRack Enclosure is ideal for customers who need to protect valuable equipment in harsh working environments that would overwhelm a typical rack. The enclosure has a NEMA 12 protection rating, which is equivalent to IP54. That means it can protect your equipment from falling dirt, dust, drips, splashes and accidental contact with personnel. The front and rear doors have ventilating louvers instead of open mesh. On the front door there are built-in dust filters. To compensate for the added air resistance of the filters, there are 12 large, high performance fans to the rear door. The fans pull air through the enclosure, from front to rear. The cabinet has a Zone 4 seismic rating. That means the SR42UBEIS can withstand extreme movement and vibration, equivalent to the stress of a major earthquake. The heavy-duty steel frame supports up to 3000 pounds. Meets all enclosure requirements towards PCI DSS (Payment Card Industry Data Security Standard) Compliance.