Products Architectural Louvers, Dampers, Roof Curbs, Actuators, Grilles, Sunshades and more. Ventilators - Vent Hoods: Model:GC-C, GC-F Gravity Cap APPLICATION Developed for ventilation of roof top intake and exhaust openings. GC-C, GC-F DOCUMENTS - Submittal Sheet - GC-C BIM (REVIT) - GC-F BIM (REVIT) Drop Plenum Diffusers Balancing / Regulating Dampers UV Products Iris 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