Study cylinder replacement due to lost key

"I want to exchange the keys in the room"

A detached house project in Tokyo that is also a design office and home.The person in charge of the design company was the client. U9.LA was attached.Perhaps because it is a study, there is a large desk and documents.It's more like a writer's room than a design office.

Anyway, it is rare that LA is attached.Privacy protection will be the main purpose.

However, the DT is thick to replace. There was also DT43.This is also an unusual design.

Adjust with the core spacer stored in the junk, replace the core, and you're done. (If you don't have a spacer, you can proceed by replacing only the inner cylinder.)