Does anyone know where I can buy UV glass for my HQI fixture???

Is there anything special about that glass? My glass shields appear to be plain old 1/4" single pane float glass.

well
I don't know about being special but I got regular glass and it lasted like 45 minutes before it cracked. I have just resigned to ordering new fixture

Oh, that's a bummer. Maybe the fixture manufacturer can point you in the right direction?

I'd call Raleigh Glass & Mirror, explain what you have and see if they can help.