I am on the way to work but can when I get home. It is actually easy in the bottom front of each tub I drilled a 1/8 hole through that shelf about 3/4 inch from the edge then I just drop a tee in the hole. The tubs can't slide over the head or past the tail below. I have a tee at each level so it is two that need to be removed to open a single tub ( the bottom one is the exception)
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