Sturdy freezer boxes provide compact storage and keep microcentrifuge tubes organized on the bench, in the freezer, or during transport.81-place 9 x 9 row boxes hold 0.5, 1.5 and 2.0 mL tubes and cryo vials.* Alphanumeric indexing* Withstand -80°C to +121°C (-112° to +249°F)* Stackable with molded-in ′no slide′ features* Lift off lid has matte panels on two sides for convenient labeling