I don't know. Based on experience with other Tenba cases I would say not any larger than the dimensions of the OTA. They typically fit tight all around. End to end will not allow a diagonal. All around will not allow the bracket or the rings. Of course, the finder and bracket will not fit. There is, in my experience, a small unpadded zippered pouch inside the case that might hold the unattached finder - no bracket. There is also a small zippered slot on the front of the bag that might hold filters or other thin items. The case has two velcro straps inside to securely retain the OTA. The case is well protected with semi rigid foam panel insulation inside of the ballistic nylon material.
See http://www.buytelescopes.com/product.asp?m=&pid=2581&display=reviews for others opinions.
If you are asking to fit another manufacturers OTA you can get the 102 measurements off of the Anacortes site or TNR.