Audax Group has acquired Affordable Interior Systems Inc., a Hudson, Mass.-based manufacturer of office systems furniture. No financial terms were disclosed. Sankaty Advisors provided acquisition financing, while Citizens Bank provided a working capital facility. AIS products include monolithic and segmented panel systems, tile-based stacking panel systems, floor-to-ceiling systems and panel and beltline raceway systems. It was advised on the sale by Lane Berry & Company. www.audaxgroup.com www.ais-inc.com