Threshold Acoustics LLC

The Monadnock Building

53 West Jackson Boulevard

Suite 1734

Chicago, Illinois 60604

T +1.312.386.1400

F +1.312.386.1414

EM cgiegold at thresholdacoustics dot com

EM dschuette at thresholdacoustics dot com

EM spfeiffer at thresholdacoustics dot com

Detail of the stairs at the Monadnock building.