Products Architectural Louvers, Dampers, Roof Curbs, Actuators, Grilles, Sunshades and more. Dampers - Round Dampers: Model:ED-I Manual Balancing Damper #ED-I APPLICATION The Model ED-I is an ideal manual balancing damper with the added ability of complete shut-off for control. For use in up to 12" round duct. ED-I DOCUMENTS - Submittal Sheet - B-8 PERFORMANCE DATA - ED-I 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