Products Architectural Louvers, Dampers, Roof Curbs, Actuators, Grilles, Sunshades and more. Dampers - Rectangular Dampers: Model:CD-170, 171 Formed Steel Frame & Airfoil Blade Damper, Class I thru III APPLICATION Formed Steel Frame & Airfoil Blade Damper, Class I thru III CD-170, 171 DOCUMENTS - Submittal Sheet - Face and Bypass Details - Jackshafting - Installation & Maintenance - O & M Instruction Sheet - CD-170-171 CAD Details - CD-170 BIM (REVIT) - CD-171 BIM (REVIT) - Actuator Sizing Chart 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