Cartola lock with galvanized latch designed for installation on the lintel of moving floor door systems. Its function is to ensure proper upper locking and secure closure of the door, providing tightness, safety and stability during transport. The galvanized finish of the latch offers protection against corrosion and wear caused by harsh weather conditions and intensive use. It is an essential component for maintaining the structural and functional integrity of the door locking system in moving floor semi-trailers.