This particular vanity was designed for a client. It was constructed using walnut and walnut veneer. It measures approximately 22” deep x 54” long and 31” high excluding the top.
The carcass is assembled with dado joinery for strength and durability, while the face frame is mortise and tenon construction. A rather unique feature was the extra stiles on each door, which is purely decorative and could certainly be left out with a few minor adjustments to rail lengths.
The top was granite, so there was no need for a fastening system on this particular build. If you are installing a conventional top, add slots to the inner cabinet ends and dividers and make hold-down cleats to attach the top. Or you can purchase them at most hardware stores. You can easily make the center face frame stile removable which allows easy access when hooking up the plumbing connections. Just use simple pocket joinery so it can removed during the installation.
I’m sure you will get many years of use from this particular project. Have Fun!