Looking for large sliding glass door tracks???

[Tusker40]

I am building an 84"x30"x30" Melamine enclosure. Does anyone know where I can order/purchase 84" or 82.5" sliding glass door tracks? I really want to use glass instead of acrylic, so I want a stable and secure track that I can remove the glass to wash the enclosure and the glass itself. The height will be 30", if that matters. I have found 72", but can't find that extra foot.

Thanks for your help!

[kenharis]

it always good to have them around