Store a variety of vials and tubes with this cold storage box for medicine, used in ultra-low temperature freezers. A cover and box dividers are included to protect samples. If you are looking to fill your Endro Freezer Rack Sets, notice the conversions below: 10 units of this product will fit into our Endro05ULT freezer rack set 18 units of this product will fit into our Endro10ULT freezer rack set 40 units of this product will fit into our Endro21ULT freezer rack set 50 units of this product will fit into our Endro26ULT freezer rack set