http://www.lci1.com/8700-series-motor-home-window

Heavy-duty radius corner window available in various sliding and stationary configurations
Heavy-duty black aluminum extrusion frame
Standard G20 tinted safety glass; other tint options available
Flat and contoured models available
Radius window available in various egress configurations which all meet RVIA and transit specifications
Durable sliding screen available upon request
Glass can be repaired in the field without removing the window from the coach
All egress windows meet FMVSS 217 Standards
Removable sliding screens on all vents
Standard clamp ring installation for various wall thicknesses

looked at 8600 and 8800 series. seems only the former is "Thermopane"