Providing liquid cooling to its inhabitants, the 720 Series air transport rack (ATR) enclosures are configurable for a variety of liquids including polyalphaolefin (PAO) and ethylene glycol/water mixture (EGW). A line-replaceable unit, the enclosures feature avionic-approved field-replaceable components with a low minimum time to replace. Cooling side panels are configurable for either front or rear coupler access. When combined with a mating liquid avionics tray, either fixed or isolation mount, the 720 Series can be installed onto the tray with a precision, blind-mate drip-less connection. SIE Computing Solutions Inc., Brockton, MA. (800) 926-8722.