It's not 25". It is the original cabinet though, at least it's the same as the one on KLOV and it is the same as most HI's I've seen. I have also seen them into converted Gauntlet cabs quite a bit. It's not that big of a cabinet, it's more like Gauntlet-size. However you could probably fit a larger CP on it and since the monitor is angled back, it would work pretty well, compared to doing the same with a classic style 19" cab.
It's still a good deal though if the picture is good and you have a use for it.
Wade