Products Architectural Louvers, Dampers, Roof Curbs, Actuators, Grilles, Sunshades and more. Ventilators - Louvered Penthouses: Model:PEL-4 4" Deep, "J" Blade, Extruded Aluminum APPLICATION The Model PEL-4 is a penthouse consisting of 4" deep fixed non-drainable extruded aluminum louvers. This penthouse offers boxed or mitered corners. PEL-4 DOCUMENTS - Submittal Sheet - PEL-4 BIM (REVIT) UV Products Iris Dampers Drop Plenum Diffusers Balancing / Regulating 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