Checklists on the subject of door safety.

The door cylinder is part of the total system necessary to secure a door - but just how safe is a door cylinder? How do I measure the length of the cylinder for my own door properly and what do I have to consider when buying a reinforced bolt lock in order to find the right model?
Here you can find checklists which will answer all your questions and help you take the most important points into consideration.

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