Selkirk Americas, L.C. (Selkirk), a manufacturer of venting and air distribution products for commercial and residential HVAC applications, was purchased by Tomkins plc, a global engineering and manufacturing group. Selkirk will retain its current structure and operate as a separate company within the Building Products Division of Tomkins plc. Selkirk has six manufacturing facilities, located in the United States, Canada and Mexico, and had sales of about $130 million and gross assets of about $62 million in 2005.