Products Architectural Louvers, Dampers, Roof Curbs, Actuators, Grilles, Sunshades and more. Duct Take-Offs - Duct Take-Offs: Model:BMD, BM Bellmouth Take-Offs APPLICATION The Models BM, and BMD are Bellmouth shaped takeoffs offered with (BMD) or without (BM) a damper blade. The model BMD includes a air-tight volera gasket, both models have pre-drilled holes. BMD, BM DOCUMENTS - Submittal Sheet - BM BIM (REVIT) - BMD 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