Products Architectural Louvers, Dampers, Roof Curbs, Actuators, Grilles, Sunshades and more. Dampers - Rectangular Dampers: Model:MD-115 Opposed Blade, Balancing, 3V Blade, Steel, up to 4" wg (Rollformed) APPLICATION Roll-formed galvanized Steel frame, Heavy Duty 16 ga. galvanized Steel Blade with opposed action. MD-115 DOCUMENTS - Submittal Sheet - Jackshafting - Installation & Maintenance - O & M Instruction Sheet - MD-115 BIM (REVIT) - Actuator Sizing Chart Balancing / Regulating Dampers UV Products Iris Dampers Drop Plenum Diffusers 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