Before reconstitution, HUMATE-P can be safely stored at room temperature (up to 25°C [77°F]) for up to 36 months. (After reconstitution, HUMATE-P should be used within 3 hours.)

How to take Humate-P | Humate-P
Humate-P is available in a variety of vial sizes. This may help make accurate dosing easier, reduce waste, and make vials easier to store and carry.
CSL Behring

https://labeling.cslbehring.com/PRODUCT-DOCUMENT/US/Humate-P/EN/HUMATE-P-Doctor-Discussion-Guide.pdf

Humate-P Potency Units: Getting the Numbers Right in Clinical Practice
Humate-P’s labeling includes two potency values—one for VWF:RCo and one for Factor VIII (FVIII:C)—because it is a plasma-derived concentrate that contains both von Willebrand factor (VWF) and factor VIII.
PharKeep DigestKevin Van, PharmD, BCPS (Editor)
What Does the “P” in Humate-P Stand For?
In Humate-P, the “P” means Pasteurized—a safety step where the product is heated to 60°C for 10 hours to inactivate viruses while preserving clotting factor activity, ensuring safe and effective treatment for VWD and hemophilia A.
PharKeep DigestKevin Van, PharmD, BCPS (Editor)