Cooperbolt emergency door bolts are made in the UK from mainly UK manufactured components; they are heavy duty and quick and easy to fit. The battery powered alarmed units include a loud buzzer and require no wiring. The door bolts provide a level of security whilst allowing access in an emergency. They are suitable for inward and outward, and single and double doors. Very little maintenance is required other than change the battery (alarmed units only) every 12 months and regularly check that the bolt shoot withdraws smoothly when the pushpad is pressed. They fit to most types of doors, wood and metal doors alike.