Looks like you need a false panel connector. We unfortunately don't sell this exact style, but our 32-134 does the same job and may be worth considering. Look it over and see what you think.
Great! All orders can be placed on our site at your convenience.
I'm not sure what the arm might be in this case. Might you be referring to the white tracks on the sides?
If so, I think we may be able to help with that. I'd like to see more of the track, though, if that's possible. Can you show me the front end? I'm assuming there will be wheels but that's not always necessarily the case.
Thanks! This is a huge help. This appears to resemble one of our self-closing drawer tracks. We offer several sizes, which you can see here.
Please let me know if you had any other questions and I would be happy to assist.
