QT are talking about the 2 forward corner panels on the FB? Mine are Makrolon (Crazed terribly) but I can store them flat. Heck my forward center is also Makrolon and it was crazed so bad I put in a piece of 40ga vinyl in it's place just to finish the season. Also Makrolon comes with different coatings. Mine is Makrolon AR which states right on there site that it's not for sharp bends. I also know that washing them on a hot day will also cause the crazing even on the flat panels. i learned from experience. The uncoated version would work but it's not scratch resistant. I'm probably redoing the enclosure this spring and might be going with O'Sullivan, O'Sea 40 and 60 or 80 gauge. The 60 or 80 ga. is for the bends so to give a close to non-wrinkled look.