Window regulators and winders facilitate the raising and lowering of vehicle window glass. Regulators utilize a system of cables, gears, or linkages—typically mounted within the door—to translate rotational or linear force into vertical window movement. Manual winders directly drive this mechanism via a hand crank, while power regulators employ an electric motor and often include anti-pinch safety features. Components include the regulator assembly, window channel guides, balance weights, and—for manual systems—the window handle and corresponding drive gears. Variations exist for differing window configurations – including sliding or pivoting designs – and vehicle door types. Replacement necessitates precise alignment to ensure smooth operation and prevent glass damage.