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Sliding Door Hook Lock With Key Sliding doors look elegant and stylish in any home However, they aren't always secure. Simple bolts will not suffice but there are plenty of locks that can be used to secure sliding doors. These mechanical locks are easy to install and don't require batteries or electricity. They offer basic PIN access but do not have the remote features of smart locks. Keyed There are many keyed locks that can be used to secure a sliding doors. They come in different sizes and shapes that can be use