The National Institutes of Health (NIH), specifically the National Institute on Alcohol Abuse and Alcoholism (NIAAA), requires rodent housing and caging systems to support its animal care program. These individually ventilated cage systems, including racks and air handling units, are needed to safely accommodate additional research animals. The equipment is essential for maintaining disease-free conditions and protecting animals from adventitious infectious agents. The requirement supports continued operation of the NIAAA Division of Intramural Clinical and Biological Research and compliance with federal animal welfare standards. No timelines, budget, or performance location were specified in the description.