How do I know what cylinder lock I need?
Single Sided Profile Cylinder Yale Keyway US4 with Thumb Turn
Cylinders
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Open Jul 21, 2026 - 02:45 PM
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Answer
Jul 21, 2026 - 02:45 PM
To determine which cylinder lock you need, consider the type of door (e.g., wooden, metal, uPVC), the required security level, and the size of the existing lock cylinder (measured from the center of the screw hole to each end). Also, check whether you need a single, double, or thumb-turn cylinder based on how you want the lock to operate.
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