Products Architectural Louvers, Dampers, Roof Curbs, Actuators, Grilles, Sunshades and more. Louvers - Adjustable Louvers: Model:AFL-D-4 4" Deep, Adjustable Blade, Extruded Aluminum APPLICATION The Model AFL-D-4 is a high performance extruded aluminum adjustable drainable louver. The Model AFL-D-4 can be used for exhaust or intake air. AMCA Licensed AFL-D-4 DOCUMENTS - Submittal Sheet - AFL-D-4 BIM (REVIT) - CSI 3-PART SPEC. - Operation and Maintenance Instructions - AFL-D-4 CAD DETAILS - Louver Installation Instructions - Louver Color Selector - Equipment Screen Support System - Louver Details - Louver Shapes - Actuator Sizing Chart - Effects of Birdscreen 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