Flexible hinges withstand -20°C freezer storage.  Removable polypropylene rack with handles holds 1.5 or 2.0 ml tubes (80) or 0.5 ml tubes (60).  One-half inch thick acrylic with interior dimensions of 10 5/16" x 3" x 2 3/4".  Shipping weight: 6 lbs.
To be discontinued.  Limited to stock on hand.  Call for current quantities.