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Page 8 of 10
Window Envelopes
Standard Size Windows and Positions
| Size |
Standard Size Window
|
Standard Position from |
| Left |
Bottom |
| 6-1/4 Window |
1-1/8 x 4-1/2 |
3/4" |
1/2" |
| 6-3/4 Window |
1-1/8 x 4-1/2 |
7/8" |
1/2" |
| 7 Window |
1-1/8 x 4-1/2 |
7/8" |
1/2" |
| 7-3/4 Window |
1-1/8 x 4-1/2 |
7/8" |
1/2" |
| 8-5/8 or Check Window |
1 x 3-3/4 |
1-1/8" |
3/4" |
| 9 Window |
1-1/8 x 4-1/2 |
7/8" |
1/2" |
| 10 Window |
1-1/8 x 4-1/2 |
7/8" |
1/2" |
| 10 Window |
1-1/8 x 4-1/2 |
7/8" (right) |
1/2" |
| 11 Window |
1-1/8 x 4-1/2 |
7/8" |
1/2" |
Postal Regulations Governing Window Envelopes
- The address window must be parallel with the length of the envelope and should be placed in the lower portion of the address side.
- Leave at least 3-1/2" of clear space on the right hand end to allow ample space for stamps, postmarking, forwarding address, etc.
- Nothing but the name, address and any key number used by the mailer may appear through the address window.
- The return address should appear in the upper left corner. If there is no return address and the delivery address does not show through the window, the piece will be handled as dead mail.
- The address disclosed through the window must be on white paper or paper of very light color.
- Consult U.S. Postal Service Domestic Mail Manual for social regulations concerning window envelopes used for registered mail and business reply mail.
- A strictly mandated clear zone of 5/8" from the bottom of the envelope must be maintained to participate in FASTforward. This is in the area in which the FASTforward text and coding imprint occur. Since the standard window position of a #10 commercial is only 1/2" from the bottom, it clearly encroaches into the clear zone of 5/8"x 4-3/4" (lower right corner). Repositioning the window to 11/16" from the bottom avoids any potential overprint problems and possible rejection by the USPS.
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