I had the same problem with yellowing doors and (entry door) window frames on my Keystone trailer. Dealer said there was nothing they could do. It was the sun causing the yellowing.
Mr. Clean Magic Eraser whitened up the plastic window frames a little.
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Pete (Jolly Mon)
2018 Wildwood Grand Lodge 42 DLTS
-Seasonal Space, Northern MN.
-2017 Sylvan 8522 LZ LES/115 Merc/Sea Legs
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