Yes! You may use your own boxes whether you are storing or shipping so long as they are within UPS guidelines. Keep in mind older boxes lose inherent integrity over time and may not travel well, which may not be covered in the insurance. You may purchase boxes wherever they are sold.
When using your own boxes you will need to calculate the boxes total inches and the billable weight to ensure the boxes are within the UPS guidelines, and freight is billed correctly.
- Billable weight can be calculated by doing LxWxH/166
- Total cubic inches can be calculated by doing 2xWidth+2xHeight.
Note: Pricing will vary for shipping and storage depending on the size and weight of the boxes you use.