MTC Bio's FlipTop™ hinged lid cardboard freezer boxes provide reliable protection and storage for your laboratory samples. They are made of recyclable cardboard with a liquid resistant outer coating, plus each box holds up to 81 or 100 tubes (up to 13mm and 12mm respectively) and is shipped fully assembled with dividers. For added convenience, the boxes have drain slots and numbered grid markings to ensure accuracy. Available in 3in. and 2in. formats with a range of color options.