On Sun, Jan 13, 2013 at 3:49 PM, ChildrensPeaceGuild <
childrenspeaceguild@yahoo.com> wrote:
> I forgot to mention the technical term for these is "acrylic block window"
>
And, if you want to spend the money, you can buy closed, multicellular,
double and triple glazed polycarbonate panels, designed just for
greenhouses skylights and sunspaces, solar thermal collectors too.