DB Series duct boosters help increase airflow in problem areas, says the manufacturer. The duct boosters are available in 6-, 8-, 10-, and 12-in. sizes, and are suitable for residential and commercial heating and cooling applications.
Sealed Unit Parts Company, Inc., P.O. Box 21, Allenwood, NJ 08720; 732-223-6644; 732-223-1617 (fax); firstname.lastname@example.org (e-mail); www.supco.com (website).