It will work with either base or wall cabinets just so the height of the cabinet is the same
Hi Joey - This Satin White filler will sit or install flush with the cabinets face frame. We hope this helps to clarify, and we appreciate you reaching out to us here at Hampton Bay.
My handyman was unable to attach filler panel because it never arrived.
While they may be a very close match, and depending on the screen you are using to view them on HomeDepot.com, we do recommend you reaching out to your nearest store. This way, you will be able to discuss your project's needs with a team member there and possibly look at display options. We hope this helps, and we appreciate you considering Hampton Bay cabinetry!