OfficeSource Inc., Denver, CO, wholesaler of office furniture, today announced it has acquired NDI Wholesale, Nashville, TN, independent office furniture wholesaler in the Southeast.   ; NDI Wholesale services more than 530 active customers throughout a seven-state region, including Kentucky, Tennessee, Louisiana, Mississippi, Alabama, Georgia and Florida.   ; The addition of NDI Wholesale fits our business model and strategy perfectly," explained Todd Elmers, chairman and CEO. "It takes our coast-to-coast presence another step closer toward a full nationwide distribution network."   ; NDI Wholesale complements OfficeSource's existing locations, products and services. NDI Wholesale dealers provide a complete array of office furniture as well as interior design services. The company has three distribution centers located in Nashville, Birmingham, AL, and the Orlando, FL, area.   ; With the acquisition, OfficeSource has a current revenue run rate of $120 million.