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The CDS (Companion Duct System) machine from this St. Louis-based company eliminates the need to use pre-stamped corners in the notched flanges on duct work. Instead it uses 1,000-lb. coils to connect the flanges and provides hole for high-speed duct assembly with large sheet metal screws. It also decreases leakage, strengthens duct connections, reduces assembly sag, saves installation labor and more.
Engel Industries, 8122 Reilly Ave., St. Louis, MO 63111; 314/638-0100; fax: 314/638-4048; www.engelind.com.