Front doors are vehicle-specific body panels providing passenger access and structural integrity to the unibody. They integrate hinges, latching mechanisms, and weather sealing to ensure secure closure and cabin environmental control. Construction typically utilizes steel or aluminum outer skins bonded to an internal frame incorporating mounting points for glass, trim, and safety systems. Power door systems integrate electric motors, window regulators, and control modules for automated operation. Impact beams within the door structure enhance side collision protection, meeting established safety standards.