ENVELOPE SIZES… NORTH AMERICAN STANDARD IN RELATION TO INTERNATIONAL STANDARD






ENVELOPE SIZES… NORTH AMERICAN STANDARD IN RELATION TO INTERNATIONAL STANDARD

Here are a list of North American envelope sizes…

Format Dimensions (in) Dimensions (mm) Ratio
A2 (Lady Grey) 4⅜ × 5¾ 111.1 × 146.1 132%
A6 (Thompson’s standard) 4¾ × 6½ 120.7 × 165.1 137%
A7 (Besselheim) 5¼ × 7¼ 133.4 × 184.2 138%
A8 (Carr’s) 5½ × 8⅛ 139.7 × 206.4 148%
A9 (Diplomat) 5¾ × 8¾ 146.1 × 222.3 152%
A10 (Willow) 6 × 9½ 152.4 × 241.3 158%
No. 6¾ (Lady Chapman) 3⅝ × 6½ 92.1 × 165.1 179%
No. 7¾ (Monarch) 3⅞ × 7½ 98.4 × 190.5 194%
No. 9 (Windsor) 3⅞ × 8⅞ 98.4 × 225.4 229%
No. 10 (Tairy Greene) 4⅛ × 9½ 104.8 × 241.3 230%
No. 11 (Business Formal) 4½ × 10⅜ 114.3 × 263.5 231%
No. 12 (Business Casual) 4¾ × 11 120.7 × 279.4 232%
No. 14 (Business Nude) 5 × 11½ 127.0 × 292.1 230%

Here are the corresponding International Standard Sizes…
Sometimes If a copier lacks proper North American Format… It is compatible with the Internationals Standard Format… DL makes a good translation of No. 10…

Format Dimensions (HxW mm) Suitable for content format
DL 110 × 220 1/3 A4
C7/C6 81 x 162 1/3 A5
C6 114 × 162 A6 (or A4 folded in half twice)
C6/C5 114 × 229 1/3 A4
C5 162 × 229 A5 (or A4 folded in half once)
C4 229 × 324 A4
C3 324 × 458 A3
B6 125 × 176 C6
B5 176 × 250 C5
B4 250 × 353 C4
E3 280 × 400 B4
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