The STP-309DI is an Insulated Category B Shipping System designed for the shipment of temperature controlled shipments using phase change materials such as the SAF-T-TEMP® line as well as Dry ice as an energy source. FEATURES: Smallest and Lowest Cost Insulated Shipping System qualified for Category B and Exempt Patient Specimens and Dry Ice Designed for use with Dry Ice Ideal for overnight frozen shipments. Combine with STP-510 Overpack System for “Dual Shipper” – two temperature requirements in one shipment. System Components: Outer Box – OD 11.25 x 9.5 x 8.5 ” pre-printed with Biological Substance, Category B and UN 3373 Markings Inner Box - OD 7.75 x 4.25 x 2.25" Insulated Chest – ID 7.75 x 5.75 x 5” STP-150 Absorbent Strip STP-609 Saf-T-Rap® Sticky Bubblewrap, 6 x 12” STP-700 Disposable Secondary Pressure Vessel STP-804 UN 1845 Marking STP-819 Exempt Human/Animal Specimen Marking Approximate Capacity: Max. Secondary Pressure Receptacle : 2 Max. 2mL Tubes: 20 Max. 10mL Tubes: 8 Max. 14mL Tubes: 8 Max. 50mL Centrifuge Tubes: 2