I purchased these cabinets (along with a few more) from a Vo Tech in a Public Surplus Auction.
They were being used as general purpose cabinets, so they all had functional top drawers. I flipped one over, reversed the drawer guides, cut off the toe kick area (which was now on top) made a shelf and a top for it, and we placed it in the middle on top of the other cabinets for towel storage. We went from a 6 foot vanity to a 110 inch vanity area. Even though we gained a LOT of storage from our previous set up, I wanted to utilize the area behind the two drawer fronts where the sinks are. The sinks are closer to the wall than standard (by design) so I had extra room. That is why I asked about an extra deep tilt out set up. Nothing that I could find, so....decided on U shaped drawers.
I searched for something pre-made, but nothing showed up. Did not want to purchase new drawer boxes. These boxes are high quality hard rock maple all dove tailed, so decided to modify them.
Had some left over gray PVC sheet from a project 30 years ago. This is why I don’t throw good scraps away. Cut up the old drawers, and fitted the PVC to go right around the sinks. Used oak blocks to hold the PVC in place. The drawer bottoms were floating, so I glued them in the back corners for extra stiffness.
All worked out well. I included a pic of the tilt out trays that came out of our old vanity set up. You can see how much more storage we gained for little things.
I realize that the "right" way to do this would have been laminating wood into the shape I needed, cutting a "U" groove to fit over the bottom shelf and glue it all up. But, I had this material sitting around. None of this shows when the drawers are closed. It is plenty strong the way it is.
We are going to use one of the left over cabinets to make a “head knocker” for the water closet; even more storage.
