Selkirk, Inc., Dallas, TX, has promoted John Birdsong to vice president - research and development. Birdsong joined Selkirk in 1999 as director of research and development and has lead his R & D team in developing new products as well as redesign and cost-saving measures on Existing products. Birdsong and his team also work closely with the industry licensing and rules agencies to ensure Selkirk products are approved for use in the HVAC market. Selkirk, Inc. is a leading manufacturer of chimney, venting and air distribution products for the commercial and residential HVAC industry. For more information, visit www.selkirkinc.com.