Sorry I'm late getting back to you on this one Cookie, big day out with the grand-kids then I lost all my unread postings.
Yes the recipes are A4, made my own dividers by laminating a blank piece of A4 and just attaching a tab on the top, they are stored the portrait way. At the moment I have heaps of unlaminated ones in the box but because of the neat fit and plenty of laminated ones already in there, they all stand nicely. I will get DH to do some more laminating for me soon but they would be perfectly OK to leave in there as they are really.