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Jeff LichtmanI own the Roop boxes.  SGC, GAI and PSA are in my boxes and fit fine.  Because SGC and GAI are a bit bigger than PSA, you can't fit as many in the box (the four inner boxes actually).  But you can still fit plenty.  As for the outer lock..well...if I were a thief (let's say for argument's sake I was Tom Regos) and stumbled upon the locked MJRoop box, well, I could probably chew through outside to get the goodies inside.  Nevertheless, they do look great and hold the cards very efficiently.  Bottom line, they will allow for display in a nice way but don't compare them to a safebox or anything of the sort.