On Mon, 24 Nov 2008 00:09:11 -0600, drb wrote:

I need to install some new kitchen light lenses. I believe that's
what they are called. These appear to be made of plastic tho I'm not
100% sure. If I need to cut them, what is the best tool for that, a
sheet rock knife or something else? And when I cut it, should the
finish side be facing up or down?

If it matters, these fit flush with the ceiling and measure something
like 21" by 48" (approx; 2 of them)