Get the Perfect Fit: How to measure your door for your Bold Smart Lock?

Before placing an order for your Bold Smart Lock, it's crucial to determine the right size. Bold cylinders come in standardized lengths, so let's get you measured up!

Watch the video below to guide you through the measuring process.

Step-by-Step measuring guide:

  1. Identify the lock hole: Start measuring from the lock hole intended for the locking screw.
  2. Measure both dimensions: Measure both the inner dimension (indoor) and the outer dimension (outdoor) from this point.


Understanding model numbers:

The model numbers indicate the cylinder dimensions: SX[indoor][outdoor]. 

doorfromside_EN (1)

Inner dimensions:

  • Inner dimensions increase in steps of 10 mm.
  • Example: The SX33 model fits doors with an inner dimension of up to 35 mm.

Adjustable outer dimensions:

  • Outer dimensions can be adjusted using the provided adapters.
  • Standard outer dimensions are 30 mm or 50 mm.
  • You can extend the outer dimension by 5, 10, or 15 mm. For instance, the SX33 can extend from 30 mm to 35, 40, or 45 mm using the adapters.

Important notes:

  • Ensure there's about 3 cm of space between the cylinder hole and the door frame to avoid pinching the inner knob. Most doors won’t have an issue with this.
  • For sliding doors, keep in mind that the inside knob is approximately 45 mm thick, which might restrict the handle's movement.

By following these steps, you'll ensure that your Bold Smart Lock fits perfectly, providing both security and ease of use.