Coin Talk

I have looked around on the net and can’t seem to find the information I need. You seem to have a nice friendly site here so I thought I’d ask here. I have some law enforcement challenge coins that I want to to put in coin slabs. I am not looking to have them sonically sealed. Its a bit of a long story that doesn’t need to be explained here for length purposes. I have been looking on line but can’t seem to find the slab I need, if one does indeed exist. My coin diameter is 1 3/4" or 43-44mm as far as I can tell. I have searched this forum and have not been able to find the information I need.

Q. Do these slab sizes exist?
Q. If yes where do I find them?

Thanks in advance.