Popular freezer boxes hold 1.5-2.0 ml tubes and most cryo vials up to 60 mm tall. Boxes feature vent slots under each cell and writing surfaces on the lids. Zylar® boxes are very clear and withstand conventional freezing (-90°C) and storage in liquid nitrogen. Zylar® is an impact-modified styrene-acrylic co-polymer resin. Do not autoclave Zylar® boxes.

BestBox 81-place boxes fit most freezer racks. Permanent dividers won’t lift out. Cell dimensions are approximately 0.5” x 1.25” H (12.7 x 31.7 mm H). Outer dimensions are 5.1” L x 5.1” W x 1.8” H.