Save the .blend file to any file location you like. Included in this file are the PBR materials.
How to load the Models:
To load the model/s into your scene click File > Append > mirror cabinet country style.blend > Group, then choose the group to load the models all at once or choose Object and select the desired model. Then click Append from Library.
All models have PBR shaders, the cabinet has metal knobs, white corpus and mirror.