Products Architectural Louvers, Dampers, Roof Curbs, Actuators, Grilles, Sunshades and more. Dampers - Backdraft Dampers: Model:CB-601 Aluminum Backdraft Damper (up to 4000 fpm) APPLICATION The model CB-601 is a horizontal or vertical mounted backdraft damper that is designed to allow horizontal or vertical airflow and prevent reverse airflow. CB-601 DOCUMENTS - Submittal Sheet - Installation & Maintenance - Accessories & Options - CAD Details - CB-601 BIM (REVIT) - CSI 3-PART SPEC. - CB Series assembly UV Products Iris Dampers Drop Plenum Diffusers Balancing / Regulating Dampers Louvers Dampers UL Listed Dampers Roof Curbs and Rails Sunshades Architectural Grilles Ventilators Doors Actuators Fans Air Measuring Products VAV Terminals Security Bars & Grilles Plenums Duct Take-Offs Custom Work Manufacturer Cross Referencing System View Now Previous Next