Replacing your letterbox is a very simple process. Following this step by step guide will help you with selecting the correct letterbox.
- STEP 1 Measure your cutout width (A) 00:18, and your cut-out height (B) 00:26. This is known as aperture. Do not include additional diamond/circle cuts within this measurement.
- STEP 2 Measure the thickness (C) 00:44 of your door to the nearest mm.
- STEP 3 Choose the quality of the letterplate to fit your door.
We have made a downloadable How to Measure a Letterplate Guide.
Note: If ordering a Yaleseal 10” or 12” letterplate and your door is 18mm-38mm thick then you will need to order the 20-40 option. If your door thickness is 38mm-78mm then you will need to select the 40-80 option. If you have any questions, please contact our customer services. Contact details can be found on our website.