Products Architectural Louvers, Dampers, Roof Curbs, Actuators, Grilles, Sunshades and more. Roof Curbs and RailsConventional CurbsConventional RailsCurb AdaptersMetal Building CurbsUMB-1 - One Piece Curb with Integral Rib Closures, Use with R & SSR panelsUMB-2 - One Piece Curb with Loose Rib Closures - Use with R & SSR panelsUMB-3 - One Piece Curb with flat flanges - Use with Vertical Architectural SSR PanelsUMB-4 - One Piece Curb with Loose Rib Closures (downhill side) - Use with R & SSR PanelsUMB-5 - One Piece Curb with Integral Rib Closures - Use with R & SSR PanelsUMB-7 - Two Piece Curb with Loose Rib Closures - Use with R & SSR PanelsSupport Framing Systems - Blanket InsulationSupport Framing Systems - Thermal Block InsulationLoose Rib Closures - Under/OverIdentification Guide - Unknown Metal Building Roof PanelsMetal Building Rails 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