looks like your doing a fantastic job.i was wondering why your putting a back on,is it needed for strengh? the last rack i built i put reflectix insulation on the back and it's unbelievable.in a cold room you can pull out a tub and stick your face in the opening and feel heat on your face.i've checked temps in each tub and from back to front (i also use belly heat) the temps change every 1.5-2 inches.can't wait to see your pix of the completed rack,have fun!

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