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Are Upvc door locks a standard size?

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UPVC Door Locks: Sizing and What You Need to Know

upvc door locks and cylinders

UPVC (Unplasticized Polyvinyl Chloride) door locks are an essential component of modern home security. They are commonly found in residential and commercial properties, providing a secure and durable locking solution for UPVC doors. In this post, we will discuss the sizing of UPVC door locks, including whether there are standard sizes and what you need to know when shopping for one.

What are UPVC Door Locks?

UPVC door locks are specifically designed for use with UPVC doors, which are made from a rigid and durable plastic material. These locks work by engaging multiple locking points within the door frame when the key is turned, providing a high level of security and resistance against forced entry.

Do UPVC Door Locks Come in Standard Sizes?

While there is no universal standard size for UPVC door locks, there are common sizes and types available in the market. The most prevalent types of UPVC door locks include:

  1. Euro cylinder locks
  2. Multi-point locking systems
  3. Mortice locks

Each of these lock types can come in various sizes and dimensions, which are typically determined by the door’s thickness and the distance between the lock’s fixing screws.

For Euro cylinder locks, the size is measured as the distance from the center of the screw hole to the end of the cylinder on both sides (e.g., 35/35mm). Multi-point locking systems, on the other hand, have several measurements to consider, such as the backset (distance from the edge of the door to the center of the keyhole), centers (distance between the keyhole and the handle spindle), and the overall length of the lock strip.

How to Determine the Right Size for Your UPVC Door Lock

When shopping for a UPVC door lock, it’s essential to know the correct size for your door. Here are some tips to help you find the right fit:

  1. Measure your existing lock: If you’re replacing a lock, remove it from the door and take accurate measurements of its dimensions. This will give you a clear idea of the size you need for your new lock.
  2. Consult the door manufacturer: If you’re unsure about the correct size for your UPVC door lock, consult the door manufacturer or supplier for guidance. They can provide you with the necessary information based on the door’s specifications.
  3. Seek professional advice: If you’re still uncertain, consider consulting a locksmith who specializes in UPVC door locks. They can assess your door and recommend the appropriate lock size and type.


In summary, while there isn’t a one-size-fits-all solution for UPVC door locks, there are common sizes and types available for various door specifications. By understanding the different lock types, their sizing, and how to measure them accurately, you can ensure that you choose the right lock for your UPVC door. Remember, if in doubt, always consult a professional locksmith for guidance and expertise on UPVC door lock sizing and installation.

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