Products Architectural Louvers, Dampers, Roof Curbs, Actuators, Grilles, Sunshades and more. Louvers - Fixed Louvers: Model:FL-D-4 4" Deep, Fixed Blade, Drainable, Extruded Aluminum APPLICATION The Model FL-D-4 is a 4" deep extruded aluminum fixed drainable louver. (AMCA Licensed) at 1056 FPM only .01 oz/per sq. ft. water penetration and a free area of over 50%. FL-D-4 DOCUMENTS - Submittal Sheet - FL-D-4 CAD Details - FL-D-4 BIM (REVIT) - CSI 3-PART SPEC. - Louver Installation Instructions - Louver Color Selector - Equipment Screen Support System - Louver Details - Louver Shapes - Effects of Birdscreen 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