ProBuilderize

The ProBuilderize action converts the selected object(s) into ProBuilder-editable objects.

Tip: You can also launch this action from the ProBuilder menu (Tools > ProBuilder > Object > ProBuilderize).

ProBuilderize options

Property:	Description:
Import Quads	Enable this option to keep Meshes quadrangulated when ProBuilder imports them. Disable it to import the Mesh as triangles.
Import Smoothing	Enable this option to use a smoothing angle value to calculate smoothing groups.
Smoothing Threshold	Set this value to decide which adjacent faces to add to a smoothing group. Use a value that is higher than the difference of any adjoining angle that is adjacent to the face(s) you want to add to a smoothing group. This setting is only available if Import Smoothing is enabled.