Is your computer equipment 19" rack mountable, but needs protecting from a harsh environment of dirt, grease, hot, cold or wash-down? Put it in one of Sentinel Enclosures' 20U rack mount enclosures rated to IP54 Mild Steel or IP66 Stainless Steel. You can even fit our Combination Mild or Stainless Steel Monitor enclosures on top of these rack enclosures to give a full height tall standing enclosure and all your data processing power in one place. If you need 40U height, then bolt one on top of the other. What could be simpler?