I would get some Reflectix bubble duct wrap and put a cut to fit piece behind the shade against the glass. That will cut down heat loss much more than just the shades. Also works to keep out sun heat and stops fading and sun deterioration. Covering roof vents and skylights for better results.
Great during storage summer or winter. Available Lowes, Home, Menards, etc.
Means less heat used and less AC needed.
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2017 SLX 195RB
2021 Jeep Grand Cherokee Summit L 5.7L V8
Andersen WDH hitch, Renogy 100 AH Lithium &
200 Watts solar panels from Renogy
Prev. '14 Jeep Grand Cherokee Overland, gas 3.6 V6
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