Door compatibility
Start with your door.
Use the fit guide, take the right measurements, and check the installation path before choosing a lock.
Which lock fits your door?
Which lock fits your door?
Start with the door you have. This guide suggests a product to investigate, not a confirmed fit.
Check compatibility
Check the existing inside thumbturn or key, mounting surface and available space. The lock must turn smoothly. If unsure, send photos of both sides and the open door edge, with measurements, to Heimgard Support.
Before you ask
Five photos make the door clearer.
Include these photos and your measurements when asking us to check compatibility. Do not send PINs, passwords, keys, or account credentials.
- Inside of the door
- Outside of the door
- Open door edge and lock case
- Door thickness with a ruler
- Thumbturn, cylinder, and handle measurements
Measure before you choose.
The measuring guide shows the door views, clearances, and dimensions we need for a useful compatibility check.