4" indeed! And you can see in the photos that the stand is actually bolted down to transversely-oriented joists beneath the floor. We don't have many earthquakes here in Austin, but if we did, I think this would weather the storm.
Actually, John and Brian, take a good look at the 1st and 3rd photos -- the metal brackets and bolts occupy some space inside the stand. Is this going to be a problem with the sump resting on the bottom platform? I'm not sure, since I don't know the exact sump dimensions.
Mike
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The Dude abides
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