All gates should be installed with electric locking for security and to minimise excessive force placed on the Gate Drive(s) if the gate leaf(s) are more than approximately 2.5m wide. The specifications and suggested gate sizes will vary depending upon other variables such as friction of hinges, environmental factors e.g. wind loading, type of cladding and external influences which may assist or degrade the recommended gate sizes. All automation applications require external safety photocell protection / vehicle loop detector and appropriate warning signs and/or devices.