Horizontal Card Divider

I was looking for a horizontal card divider with a tab for a good while on here and couldn't find one so I mocked up my own.
These are designed for use with the BCW card boxes and should just fit.
https://www.bcwsupplies.com/800-card-storage-box-2-piece

I personally after printing print-out stickers with set symbols and colors on them to mark what is being sorted.