This is a high quality product, and can make keeping cages much cleaner. However, I didn't realize that my cages were not the right size as I purchased from another vendor. They fit nicely in the small cube, but my tall ones are a bit narrower than the PP-platter, so they gap and don't fit perfectly. I instead now use them under my cages to protect the table top I set my nursery up on.
I have communicated this with Tony already, and am satisfied with my purchase, but wish I had paid closer attention to the sizing. They are still an asset to my Monarch Nursery!