Design C - fits in a 12x12 album - 6 horizontal 4x6 would fit in these... There are a million different configurations of these pocket pages, but this one would be easy since they would require no special sizes of pics. If you wanted to print pics, you could put the pic right beside their card. I can also make some "filler" cards - like cards with flourishes on them, wedding stuff, your initials, hearts, etc. to space out the pics/cards.