Business and Correspondence
These are the most commonly used envelopes. Commercial and Side Seam flap styles are ideal for printing. Whereas square flaps are contemporary, but not recommended for machine insertion.
| TYPE or # | SIZE | ENCLOSURE |
|---|---|---|
| 6 1/4 | 3.5" x 6" | 3.25" x 5.75" |
| 6 3/4 | 3.625" x 6.5" | 3.5" x 6.25" |
| 8 5/8 | 3.625" x 8.625" | 3.5" x 8.375 |
| 7 | 3.75" x 6.75" | 3.5" x 6.5" |
| Monarch (7 3/4) | 3.875" x 7.5" | 3.75" x 7.25" |
| 9 | 3.875" x 8.875" | 3.75" x 8.675" |
| 9 (policy) | 4" x 9" | 3.75" x 8.5" |
| 10 | 4.125" x 9.5" | 4" x 9.25" |
| DL | 4.313" x 8.625" | 4.125" x 8.375" |
| 11 | 4.5" x 10.375" | 4.25" x 10.125 |
| 12 | 4.75" x 11" | 4.5" x 10.75" |
| 14 | 5" x 11.5" | 4.75" x 11.25" |
Booklet
Booklet envelopes have the flap on the long side (open side). This style is ideal for annual reports, brochures, sales materials, and more.
| TYPE or # | SIZE | ENCLOSURE |
|---|---|---|
| 3 | 4.74" x 6.5" | 4.5" x 6" |
| 4 1/2 | 5.5" x 7.5" | 5.25" x 7" |
| 5 | 5.5" x 8.125" | 5.25" x 7.625" |
| 6 | 5.75" x 8.875" | 5.5" x 8.375" |
| 6 1/2 | 6" x 9" | 5.75" x 9" |
| 6 5/8 | 6" x 9.5" | 5.75" x 9" |
| 6 3/4 | 6.5" x 9.5" | 6.25" x 9" |
| 7 1/4 | 7" x 10" | 6.75" x 9.5" |
| 7 1/2 | 7.5" x 10.5" | 7.25" x 10" |
| 9 | 8.75" x 11.5" | 8.5" x 11" |
| 9 1/2 | 9" x 12" | 8.75" x 11.5" |
| 10 | 9.5" x 12.625" | 9.25" x 12.125" |
| 13 | 10" x 13" | 9.75" x 12.5" |
Catalog
Catalog envelopes have the flap on the short side (open end) and are available in Manila, White and Gray. All are sold in convenient quantities of 500 envelopes per box.
| TYPE or # | SIZE | ENCLOSURE |
|---|---|---|
| 1 | 6" x 9" | 5.75" x 8.75" |
| 1 3/4 | 6.5" x 9.5" | 6.25" x 9.25" |
| 3 | 7" x 10" | 6.75" x 9.5" |
| 6 | 7.5" x 10.5" | 7.25" x 10" |
| 8 | 8.25" x 11.25" | 8" x 10.75" |
| 9 3/4 | 8.75" x 11.25" | 8.5" x 10.75" |
| 10 1/2 | 9" x 12" | 8.75" x 11.5" |
| 12 1/2 | 9.5" x 12.5" | 9.25" x 12" |
| 13 1/2 | 10" x 13" | 9.75" x 12.5" |
| 14 1/2 | 11.5" x 14.5" | 11.25" x 14" |
| 15 | 10" x 15" | 9.75" x 14.5" |
| 15 1/2 | 12" x 15.5" | 11.75" x 15" |
Square
Square envelopes are often difficult to find in bulk though they draw attention to the content inside. Since square envelopes are non-standard sizes, they will require additional postage to mail.
| TYPE or # | SIZE | ENCLOSURE |
|---|---|---|
| 5" | 5" x 5" | 4.75" x 4.75" |
| 5 1/2" | 5.5" x 5.5" | 5.25" x 5.25" |
| 6" | 6" x 6" | 5.75" x 5.75" |
| 6 1/2" | 6.5" x 6.5" | 6.25" x 6.25" |
| 7" | 7" x 7" | 6.75" x 6.75" |
| 7 1/2" | 7.5" x 7.5" | 7.25" x 7.25" |
| 8" | 8" x 8" | 7.75" x 7.75" |
| 8 1/2" | 8.5" x 8.5" | 8.25" x 8.25" |
| 9" | 9" x 9" | 8.75" x 8.75" |
| 9 1/2" | 9.5" x 9.5" | 9.25" x 9.25" |
| 10" | 10" x 10" | 9.75" x 9.75" |
| 10 1/2" | 13.5" x 13.5" | 13.25" x 13.25" |
Baronial
The “Baronial” or “Bar” system designates a triangle style flap traditionally used for formal announcements and invitations. Not recommended for machine insertion.
| TYPE or # | SIZE | ENCLOSURE |
|---|---|---|
| 4-Bar | 3.625" x 5.125" | 3.475" x 4.875" |
| 5-Bar | 4.125" x 5.5" | |
| 5 1/2-Bar | 4.375" x 5.75" | 4.25" x 5.5" |
| 6-Bar | 4.75" x 6.5" | 4.625" x 6.25" |
| Lee | 5.25" x 7.25" | 5.125" x 7" |
| 8-Bar | 5.75" x 8.125" | |
| 8 1/2-Bar | 5.75" x 8.75" |
Announcement
The “Announcement” system or “A”, designates a square style flap. This contemporary design is ideal for photographs, greeting cards, small booklets, and promotional pieces.
| TYPE or # | SIZE | ENCLOSURE |
|---|---|---|
| A-2 | 4.375" x 5.75" | 4.25" x 5.5" |
| A-6 | 4.75" x 6.5" | 4.625" x 6.25" |
| A-7 | 5.25" x 7.25" | 5" x 7" |
| A-8 | 5.5" x 8.125" | 5.25" x 7.75" |
| A-9 | 5.75" x 8.875" | 5.5" x 8.625" |
| A-10 | 6" x 9.5" | 5.5" x 9.25" |