Rittal 3311148 - These highly efficient Inline units can create a cold curtain down a row rather than simply moving air into an aisle.Available in two versions: Flush, a configuration where the unit’s face matches that of the adjacent enclosures and air flows into the racks, and Protruding where the unit is bumped out 8 inches into the aisle and cool air flows from both sides across the face of nearby enclosures.The unit’s high-efficiency fans have been moved to the front of the LCP – on the cool side away from maximum heat – which will extend the life of the fans. Water connections are available at either the top or bottom of the unit.