400 A.B. and 300 A.B.

Light Duty Extruded Aluminum Blade and Galvanized Steel Frame Shutters or Back-draft Dampers

The 400 A.B.M. and the 300 A.B.M. are models for light duty extruded aluminum blade and galvanized steel frame motorized control damper. These dampers can be manufactured with or without a flange to meet a large number of needs.