There is no deadline for a Boxer to respond to an offer of a Box-O-Books swap.

If the other member has not responded to your offer on Box-O-Books and you wish to withdraw the offer

• You may cancel it from the Swap Details in your Box-O-Books area, by clicking
• To get to the Swap Details for a particular Box-O-Books swap:
  • Place your cursor over Community in the toolbar at the top of any page on the site
  • Click Box-O-Books in the menu that drops down
  • Click the Pending Boxes tab
  • Locate the swap in the list and click your name or the other Boxer's name
  • You will be on the Swap Details page for that Box-O-Books swap.

Related Links:

What is Box-O-Books?
Box-O-Books Tutorial
Can I suspend/turn off/pause my Box-O-Books?