The 18xx Tile Tender accommodates 40 different types of tiles. Each stack is can hold up to 6 standard (i.e. mat board mounted) tiles or  up to 18 for laminated tiles or 3 hard board backed Tiles. It comes in a box containing two trays that each hold 20 types. The lid is tight fitting and felt lined so tiles stay put when you take the 18xx Tile Tender anywhere.