In sports stadiums, where disturbances may occur, it is also very important to have strong security components which prevent access to restricted areas and ensure the well-being of the public. In doors with high traffic it is also advisable to employ components that guarantee the proper functioning of the doors, both in the opening – making this simple and easy – and in the closure, always ensuring that this preserves the security of the installation. An example of this are door closers, a solution that prevents any door from remaining open and also makes the door opening smooth without generating any type of resistance.