I took the design off of someone on here maybe ntsaint.
The carpet is speaker box carpet, probably not the most durable but it is cheap and easy to work with.
I did make a dummy panel to place over the slide when the fridge is not there.
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That there is a brilliant solution! Very well executed. I like my original KISS drawers. But, a solution like yours could be just what the doctor ordered to cure my boredom during this whole shelter in place stuff.