Choosing the right smart lock cylinder can be quick and simple. In most cases, you only need to check three key details—cylinder type, door thickness, and backset—to find the WELOCK model that best fits your door.
Most WELOCK smart lock cylinders are designed for euro-profile doors commonly used in many European homes and apartments. If your door uses a different format, such as an American cylinder, you may need a different WELOCK solution.
A quick door thickness check helps you narrow down the right smart lock cylinder size. For best results, include any trim or plate that affects the full thickness of the door where the cylinder is installed.
Backset is the distance from the edge of the door to the center of the keyhole or cylinder. It helps confirm that the smart lock cylinder will sit comfortably and work smoothly on your door.
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If your door uses an American cylinder instead of a Euro-profile cylinder, you may need a different WELOCK solution. Explore the models designed for this door type here.
Many European homes and apartments use a euro-profile cylinder, which is the main type supported by most WELOCK smart lock cylinders. If your current cylinder matches that shape, you may already be on the right track. If you are unsure, the easiest next step is to compare it with the examples in the checker or send a photo to support.
In most cases, you only need to check three simple details: cylinder type, door thickness, and backset. These measurements help you understand which smart lock cylinder is the best fit for your door.
Yes. When measuring door thickness, include any trim, plate, or escutcheon that affects the full thickness of the door where the cylinder is installed. This gives you a more accurate fit check.
Backset is the distance from the edge of the door to the center of the keyhole or cylinder. It helps show whether there is enough space for the smart lock cylinder to fit and operate comfortably on your door.
In many cases, yes. If your apartment door uses a compatible Euro-profile cylinder and the measurements fall within the supported range, a WELOCK smart lock cylinder is a good fit. A quick compatibility check is the best way to be sure.
That is completely fine. Start by checking the door thickness and looking at the cylinder type. If anything is unclear, you can also send a photo and a few basic measurements to the WELOCK support team at support@welock.com for help confirming fit.
In many standard Euro-profile door setups, yes. A smart lock cylinder is usually designed to replace the existing cylinder, so installation is often simpler than expected.
Yes, in many cases it can, but available space around the handle, escutcheon, or cylinder area should be checked first. If your door has tight clearance, measuring carefully or sending a photo to the support team support@welock.com can help confirm whether a WELOCK smart lock cylinder is a good fit.
