(18) Un-Used Mcquay Indoor Water-Cooled Vertical Self-Contained Air Conditioning Unit - 40 Tons. Model: SWT040C27AL1MYY10101010YYYYMEYY21YYY. Installed but never commissioned at Global Crossing/ WorldCom’s headquarters building near Boston, Massachusetts. Mcquay self-contained units take up less floor space than standard chilled water air handling units and are being used successfully in TV studios, libraries, museums, schools and performing art centers where low noise levels are absolutely vital. They have demonstrated exceptionally low sound levels as verified in independent, laboratory tests. (ACN250).