I understood that reflectix in the bubble window is not recommended due to the reflective heat deteriorating the lexan over continued use and time.
My bubble windows came with insulated cloth blinds which seem to work quite well with keeping the heat out in the summer and the warmth in during the winter.
Tent trailer owners use reflectix but that's on soft clear vinyl type windows, not hard plastic such as our A-Frame has. From what I've read in other A-Frame forums, it's debatable for long term use. Nothing I'd do in mine.
2012 FR Flagstaff T12SDTH
1996 Shadowcruiser Pop Up Truck Camper
1967 Newell Motorcoach
2003 Ford F150 5.4 V8 Triton Super Cab
2004 Nissan Titan LE 5.6 V8 4x4 Crew Cab