46 CFR § 160.054-2
Type and size
April 15, 2021
(a) Type. First-aid kits covered by this specification shall be of the water-tight type. Alternate arrangements of materials meeting the performance requirements of this specification will be given special consideration.
(b) Size. First-aid kits shall be of a size adequate for packing 12 standard single cartons of the kind indicated in specification subpart 160.041.