# Carrier filtering

You can filter carriers based on the module fields.
For this to work, you need to use the following standard names for your fields:

  • width
  • height
  • depth

Then the module will pass the values of these fields to PrestaShop so that it can filter the carriers correctly.
These standard names will only work if your fields units are the same as the Dimension unit that is configured in the Localization page

If the field unit is millimeters then you can suffix the field name with _mm

  • width_mm
  • height_mm
  • depth_mm

If the field unit is meters then you can suffix the field name with _m

  • width_m
  • height_m
  • depth_m

The module will detect these suffixes and will convert the values to cm before passing them to PrestaShop