[QUOTE=Cleo C. Hogan Jr;899668]There is a lot of info on this thread, so I will add mine. I have been using it for about 5 years, absolutely no problems with it.

I like Advantec for tops. I paint most of them, but not all. They are great for drilling the hole for through the top jar feeders. I will post a photo of top feeders using Advantec. Some painted, some not.

Advantec is very heavy for bottoim boards of 10 framers, but, I use it in all my 5 frame nucs.

Thanks for the pics Cleo. I bought some hives out of FL that had flat migratory tops. The wood was some type of plywood used for concrete forms that is heavy and industructble. Not advantec . Does anyone else use this and what is it called?