Ezscreen sells an 8.4" IR screen, which may be an IRTOUCH (specs are very similar).
Overview
http://www.ezscreen.com/wavelength-i...ch-screen.html
FAQ
http://www.ezscreen.com/wavelength-faq.htm
Store - No 8.4" Listed
http://www.ezscreen.com/onlineshop/e...arget=d19.html
Drivers - No WaveLength Linux Drivers
http://www.ezscreen.com/download_current.html
They offer different glass types, so I think I can get no glass. I'll submit an inquiry. One of the nice features with this IR touchscreen technology is -41ºC to +70º C operation!