Postal Explorer > IMM Issue 36 - International Mail Manual > 2 Conditions for Mailing > 270 Free Matter for the Blind or Other Physically HandicappedPersons > 274 Mail Preparation
See 122.
First-Class Mail International accepted as free matter must be marked “Free Matter for the Blind or Handicapped” in the upper right-hand corner of the address side of the mailpiece.
Matter for the blind must not be sealed, even if registered.
Free Matter for the Blind or Other Psychically Handicapped Persons items mailed under 270 are not sealed against inspection (see ASM 274). Items must be prepared in such a way that the contents are protected but inspection of the contents is not hindered.
The items must be placed in wrappers, in rolls, between cardboard, or in bags, boxes, unsealed envelopes, or containers. Dangerous fasteners may not be used. The articles may also be tied with string or twine in a manner that will permit them to be easily untied.