Light Commercial Slim Ducts offer an inconspicuous solution, hidden in attics and ceiling crawl spaces, without the energy loss associated with central ducted systems. 24K, 36K, 48K, and 60K capacities are available with up to 20.5 SEER. Cooper&Hunter’s Slim Duct systems provide flexibility of installation as, for example, the ducts can be directed into separate areas which are collectively controlled by one wall thermostat.