I just went back and looked very closely at the pic. I can just barely make out the supports, through the semi-clear tubs, on all of the shelves. I am guessing that you staggered the supports so that you could screw from the top and the botom. Now that I see it, I don't think you will have any problems with sagging. Very innovative. Great job.
Exactly..
Every man dies , not every man really lives...
William Wallace
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P.S. Sorry for my English , i know they are terrible..
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