British Standard mortice sashlocks offer the highest level of security for timber doors with handles. Tested to BS 3621, British Standard sashlocks are a popular choice for "final exit" doors as the majority of insurance companies require these doors to possess at least one lock that complies with this standard. Next Day Locks stocks a wide range of British Standard mortice sashlocks including both lever operated and Euro cylinder operated sashlocks.
Don't forget to measure your existing sashlock before buying a replacement because in this instance, size does matter! Not sure what you should be measuring? Our mortice locks product guide is full of useful information including an illustrated guide of sashlock measurements.