"mfgrs" = Manufacturers
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Personaly I love Lexan, not just for the visual glory of it!, or being able to check at a glance, but the weightlessness of it when compared to a top made of Cu thick enough to tap a thread for barbs into or to be 'flexproof'. I just want to find a 100% secure way of setting/bonding Cu tube into it to be used instead of threaded barbs. barbs suck, I don't know why nearly 99% of people use them!, 1/2inch barbs are very restrictive when used with 1/2inch tube!. I prefer to stretch the tube over 13mm Cu pipeing...