Need a Lock for a Traco Sliding Door Handle

Swisco Team,

I am looking for the lock mechanism for a Traco Door Handle. I see you have several on your website and am looking for guidance on which is the correct part.

I've attached a picture which shows both handles and where the lock part goes. I do not need to be able to unlock the door from the outside.

Thanks in advance for your help!
KC

Thank you for the prompt response. The information provided was most helpful and allowed me to purchase the parts I needed.