My entire kitchen is done with these.  I purchased clear plastic, I think they were considered placemats, and cut them to fit the bottom of the wire pull-outs and it worked out beautifully.  No need to buy the expensive wooden pull-outs.  I actually like these better.  Who wants to stand on their head to get something out of a bottom cabinet, when you don't have to, no matter what your age.  Best thing I ever did in my kitchen.  Will add photos later.