What is a key requirement for installing box patches?

The key requirement for installing box patches is that they must address jagged edges. A box patch is typically employed when dealing with damage that has made the edges of a hole or tear irregular or uneven. By effectively addressing these jagged edges, the box patch ensures a smoother, more secure fit that reinforces the structure and prevents further damage. This approach allows for better adhesion of the patch material and contributes to the overall integrity of the repair, making it a critical factor in successful damage control practices.

The other options represent considerations that are not essential to the primary function of box patches. For instance, while flat areas may facilitate the installation of patches, it is not a strict requirement, as box patches can be adapted for various shapes. Additionally, box patches can be used on holes of various sizes, not just small ones, which provides flexibility in their application. Lastly, the limitation of size, such as not exceeding 5 inches, does not apply universally; these patches can be used on both small and larger damage areas depending on the situation.