Square Cryule Freezer Boxes are engineered to withstand liquid nitrogen temperatures. These convenient storage units can be used in a freezer or at room temperature. Disposable boxes are more economical than metal, eliminate cleanup and provide easy handling of vials during filling. Wheaton Freezer Boxes accommodate polypropylene Cryule vials Cat.Nos. 12-985721, 12-985726, 12-985730 and 12-985731 in a 9 x 9 array. Boxes are made from chipboard and spray-coated with polyethylene. W x D: 5-1/4 x 5-1/4". Height is 1-1/4" for Cat.No. 651490 and 1-3/4" for Cat.No. 12-651492.