The doors are made in the version with a hidden and standard frame with a trim.
You can replace the glass with any one from the file (or your own) by connecting the material to the corresponding ID. Door size is easy to change by vertex.

https://volhovec.ru/catalog/formato-doors/ 
FORMATO aluminum doors are a stylish and laconic solution for a modern interior. They are lightweight and durable construction made of aluminum profile and decorative glass.
Cloths can be installed both on a hidden and on an aluminum box with a casing. Door to ceiling solution available. The design received
is durable and lightweight.