ISO/R 269:1962

UDC 676
Ref. No.: ISO/R 269-1962 (E)
IS0
I N T E RN AT I O N A L ORGAN IZ AT 1 ON FOR STAND AR D I ZAT I O N
IS0 RECOMMENDATION
R 269
SIZES OF CORRESPONDENCE ENVELOPES AND POCKETS
1st EDITION
A ug ust 1962
COPYRIGHT RESERVED
The copyright of IS0 Recommendations and IS0 Standards
belongs to IS0 Member Bodies. Reproduction of these
documents, in any country, may be authorized therefore only
by the national standards organization of that country, being
a member of ISO.
For each individual country the only valid standard is the national standard of that country.
Printed in Switzerland
Also issued in French and Russian. Copies to be obtained through the national standards organizations.

---------------------- Page: 1 ----------------------
ISO/R 269- 1962 (E)
FOREWORD
In view of the development of IS0 Recommendation R 216 relating to Trimmed Sizes of Writing
Paper and Certain Classes of Printed Matter, it has been considered desirable to prepare an IS0
Recommendation for the Sizes of Correspondence Envelopes and Pockets suitable for use with
the principal sizes of paper in that IS0 Recommendation.
Series of paper sizes can also be applied
A3 229
to the correspondence envelopes and
/
210
B4 1
pockets to contain papers in these sizes
c4 /'
(as will be seen from the figure on the
/
A4
right), especially if the sizes of an inter- /
z
/ 27
mediate series, known as the C Series, / kp
are introduced between sizes in the /%
/
is0 -A and IS0 - B Series.
/
/
/
/
The sizes of this intermediate C Series are as follows:
Sizes
Symbols
millimetres inches
CO
CI 648 x 917 25.51 x 36.10
c2 458 x 648 18.03 x 25.51
12.76 x 18.03
c3 324 x 458
229 x 324 9.02 x 12.76
c4
c5 162 x 229 6.38 x 9.02
C6 114 x 162 I 4.49 x 6.38
3.19 x 4.49
c7 81 x 114
C8 57 x 81 2.24 x 3.19
- -- - -
- __ - -
In practice, it is not necessary to have available every one of the C Series sizes. In fact, papers
are folded in many different ways and therefore some adjustment is necessary. This IS0 Recom-
mendation takes account both of the underlying principles and of practical necessities.
-2-

---------------------- Page: 2 ----------------------
IÇO/R 269- 1962 (E)
IS0 Recommendation R 269 August 1962
SIZES OF CORRESPONDENCE ENVELOPES AND POCKETS
1. SCOPE
This IS0 Recommendation covers sizes and designations of correspondence envelopes and
pockets intended for postal purposes. It does not contain any specification as to the ways of
closing them.
2. DESIGNATION
2.1 Correspondence envelopes and pockets should be designated
by a reference to type (see clause 2.2),
followed by an indication of size (see clause 2.3).
2.2 The type should be indicated according
...