Here is a chart of some common envelope sizes, along with the paper size generally used for enclosures.
Name | Envelope Dimensions | Enclosure Dimensions |
---|---|---|
6 1/4 | 3.5 x 6 inches (88.9 x 152.4 mm) | 3.25 x 5.75 inches (82.55 x 146.05 mm) |
6 3/4 | 3.625 x 6.5 inches (92.075 x 165.1 mm) | 3.5 x 6.25 inches (88.9 x 158.75 mm) |
8 5/8 | 3.625 x 8.625 inches (92.075 x 219.075 mm) | 3.5 x 8.375 inches (88.9 x 212.73 mm) |
7 | 3.75 x 6.75 inches (95.25 x 171.45 mm) | 3.5 x 6.5 inches (88.9 x 165.1 mm) |
Monarch (7 3/4) | 3.875 x 7.5 inches (98.425 x 190.5 mm) | 3.75 x 7.25 inches (95.25 x 184.15 mm) |
9 | 3.875 x 8.875 inches (98.425 x 225.425 mm) | 3.75 x 8.625 inches (95.25 x 219.08 mm) |
9 (policy) | 4 x 9 inches (101.6 x 228.6 mm) | 3.75 x 8.5 inches (95.25 x 215.9 mm) |
10 | 4.125 x 9.5 inches (104.775 x 241.3 mm) | 4 x 9.25 inches (101.6 x 234.95 mm) |
DL | 4.313 x 8.625 inches (109.55 x 219.08 mm) | 4.125 x 8.38 inches (104.78 x 212.73 mm) |
11 | 4.5 x 10.375 inches (114.3 x 262.525 mm) | 4.25 x 10.125 inches (107.95 x 257.18 mm) |
12 | 4.75 x 11 inches (120.65 x 279.4 mm) | 4.5 x 10.75 inches (114.3 x 273.05 mm) |
14 | 5 x 11.5 inches (127 x 292.1 mm) | 4.75 x 11.25 inches (120.65 x 285.75 mm) |
16 | 6 x 12 inches (152.4 x 304.8 mm) | 5.75 x 11.75 inches (146.05 x 298.45 mm) |