The Air Movement and Control Association International (AMCA) will present a technical seminar on air system components at the Hyatt Regency Woodfield in Schaumburg, Ill. December 2-4. The seminar will provide practical information on air system components, including recommending or selecting proper equipment, avoiding installation errors, and potential liability problems. Phone 847-394-0150 ext. 120 or fax 847-253-0088; e-mail wendie@amca.org.