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) 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