Pam Any baseball card shop or hobby shop would have boxes that are also suitable for slot cards. The boxes come in many sizes, 100 ct, 200 ct, 300 ct, 400 ct, 550 ct, 660 ct, 800 ct and 900 ct for single boxes. Also there are four row boxes that hold 3200 and 5000 ct. I use all the boxes to store baseball cards. Quit using the 5000 ct, too heavy to pick up. I currently use the 200 ct for my slot cards, as I don't have that many.