Without a question, these are the best cardboard freezer boxes you will every use. These sturdy cardboard boxes are specially coated to resist softening from repeated freeze and thaw cycles. The dividers are made from the same coated cardboard as well, not cheap paperboard like others. We do not brand these with our logo which leaves a generous amount of room to write on top. "Weep holes" in the corners for draining LNO2. Each chamber is numbered for easy identification.
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