LEBANON, TENN. — Nashville, Tenn.-based T.W. Frierson will start construction this month on a 120,000-square-foot operations facility for Permobil, a wheelchair manufacturer based in Timra, Sweden. The property, located in Park 840 in Lebanon, will include 80,000 square feet of manufacturing space and 40,000 square feet of office space. Permobil will move into the property from its existing Lebanon facility, which is half the size of the new development. The company expects to double its workforce in the next 3 to 5 years. Lebanon-based Manous Design is building the facility to green specifications, which include a solar panel array and the use of bamboo and other recyclable materials. Completion is expected next summer.