The walls of enclosed areas shall have openings installed such that:
- There shall be not less than two openings on different sides of each enclosed area; if a building has more than one enclosed area below the design flood elevation, each area shall have openings.
- The bottom of each opening shall be not more than 1 foot (305 mm) above the higher of the final interior grade or floor and the finished exterior grade immediately under each opening.
- Openings shall be permitted to be installed in doors and windows; doors and windows without installed openings do not meet the requirements of this section.