These two black velour trays are the answer to hold your Mah Jongg Tiles. They fit in all Mah Jongg Maven hard Cases- Outside Dimensions: 18 1/4″ Long, 2 3/4″  Wide, 1 1/4″ Deep, Inside Dimensions: 18″ Long, 2 3/8″ Wide, 1″ Deep and accommodate a double row of 1/2″ deep tiles.