Custom Envelope Sizes & Styles
At Priority Envelope, we offer a wide range of custom envelope sizes and styles to suit any project. Whether you need standard sizes like #10 commercial envelopes or unique dimensions for specialized mailings, we have the options to meet your needs. Our selection includes various styles, from booklet and catalog envelopes to specialty designs with custom features like windows, closures, and unique finishes. With endless customization possibilities, we ensure that your envelopes not only fit your contents perfectly but also align with your brand’s image and functionality requirements.
Commercial
Diagonal Seam
Double Side Seam
| Style | Envelope Size |
|---|---|
| #6 1/4 | 3 1/2” x 6” |
| #6 3/4 | 3 5/8” x 6 1/2” |
| #7 | 3 3/4” x 6 3/4” |
| #7 3/4 | 3 7/8” x 7 1/2” |
| #8 5/8 | 3 5/8” x 8 5/8” |
| #9 | 3 7/8″ x 8 7/8″ |
| #10 | 4 1/8″ x 9 1/2″ |
| #11 | 4 1/2″ x 10 3/8″ |
| #12 | 4 3/4″ x 11″ |
| #14 | 5″ x 11 1/2″ |
Baronial
| Style | Envelope Size |
|---|---|
| 4 Baronial | 3 5/8” x 5 1/8” |
| 5 Baronial | 4 1/8” x 5 1/2” |
| Astor | 3 5/8” x 5 5/8” |
| 5 1/2 Baronial | 4 3/8” x 5 3/4” |
| Belmont | 4 1/4″ x 6 1/4″ |
| 6 Belmont | 4 3/4″ x 6 1/2″ |
| Lee | 5 1/4″ x 7 1/4″ |
Open End Catalog
| Style | Envelope Size |
|---|---|
| #7 Glove | 4″ x 6 3/8″ |
| #1 Scarf | 4 5/8″ x 6 3/4″ |
| #3 Scarf | 5″ x 7 1/2″ |
| #6 Scarf | 5 1/2″ x 8 1/4″ |
| #1 Catalog | 6″ x 9″ |
| #1 3/4 Catalog | 6 1/2″ x 9 1/2″ |
| #3 Catalog | 7″ x 10″ |
| #6 Catalog | 7 1/2″ x 10 1/2″ |
| #9 3/4 Catalog | 8 3/4″ x 11 1/4″ |
| #10 3/4 Catalog | 9″ x 12″ |
| #12 1/2 Catalog | 9 1/2” x 12 1/2” |
| #13 1/2 Catalog | 10” x 13” |
| #14 1/2 Catalog | 11 1/2” x 14 1/2” |
| #15 Catalog | 10” x 15” |
| #15 1/2 Catalog | 12” x 15 1/2” |
| #10 Policy | 4 1/8” x 9 1/2” |
| #11 Policy | 4 1/2” x 10 3/8” |
| #12 Policy | 4 3/4” x 11” |
| #14 Policy | 5” x 11 1/2” |
Open Side Booklet
| Style | Envelope Size |
|---|---|
| #3 | 4 3/4” x 6 1/2” |
| #5 | 5 1/2” x 8 1/8” |
| #6 | 5 3/4” x 8 7/8” |
| #6 1/2 | 6” x 9” |
| #6 3/4 | 6 1/2” x 9 1/2” |
| #7 1/4 | 7” x 10″ |
| #7 1/2 | 7 1/2” x 10 1/2” |
| #9 | 8 3/4” x 11 1/2” |
| #9 1/2 | 9” x 12” |
| #10 | 9 1/2” x 12 5/8” |
| #13 | 10” x 13” |
Announcements
| Style | Envelope Size | Sheet (Flat Sizes) |
Narrowfold Card (Flat Sizes) |
Broadfold Card (Flat Sizes) |
|---|---|---|---|---|
| A2 (Square flap) | 4 3/8” x 5 3/4” | 8 1/2” x 11” | 4 1/4” x 11” | 5 1/2” x 8 1/2” |
| A6 (Square flap) | 4 3/4” x 6 1/2” | 9” x 12 1/2” | 4 1/2” x 12 1/2” | 6 1/4” x 9” |
| A7 (Square flap) | 5 1/4” x 7 1/4” | 10” x 14” | 5” x 14” | 7” x 10” |
| A8 (Square flap) | 5 1/2” x 8 1/8” | 10 1/2” x 15 1/2” | 5 1/4” x 15 1/2” | 7 3/4” x 10 1/2” |
| A10 (Square flap) | 6” x 9 1/2” | 11 1/2” x 18 1/2” | 5 3/4” x 18 1/2” | 9 1/4” x 11 1/2” |
| Slimline (Square flap) | 3 7/8” x 8 7/8” | 7 1/2” x 17 1/4” | 3 3/4” x 17 1/4” | 7 1/2” x 8 5/8” |
