I have a Wheatly with the swing leaf all ripple foam.
That's 4 ripple foam pages it holds over 1000 flies if you use tweasers. The only problems I have is with size 12 or larger hackled flies you then need a Dewitt style box that will handle the large flies so not to crush the hackle or wings.
Another Wheatly swing leaf with all flat foam will handle just as many nymphs,wets,streamers.

Tom