Shower door part

I'm afraid I don't recognize the part in your photo. Would it be possible to see it out of the door so that we can see the whole part? It appears to be a guide of some kind, but nothing we carry matches what you show exactly. I'm hoping that seeing it removed will allow me to find a good replacement.

Please understand that there is a chance we may not be able to supply you with a replacement at all, in case you didn't want to go to all the trouble of removing the door. I don't want to get your hopes up or anything. If you wanted, you could see our complete selection of shower door replacement parts here.