What do the model #s stand for?

VT = Vaccine Transport (the number following is the # of multi-dose vials it can hold) BT = Blood Transport (the number following is the capacity in liters) FT = Frozen Transport (the number following is the capacity in liters) RT = Room Temperature (the number following is the capacity in liters)

Which panels hold what temperature?

The “series” and color codes are: Series 4 (blue tab) maintains a refrigerated temperature. Series 20M (black tab) maintains a frozen temperature. Series 22 (tan tab) maintains a room temperature.