• CHARCOAL GRAY
  • RIVERA ROSE
  • CHINO
  • DUSK BLUE

Standard envelope styles and dimensions.

Use the following as a guide to envelope sizes readily available in some paper lines, or that can be easily converted by a millhouse. Call your O-K rep for assistance.

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Commercial/Official
Commercial Flap on Large Dimension
Used for business and personal correspondence.
6 ¼ 3.5" x 6" or 3 ½" x 6"
6 ¾* 3.625" x 6.5" or 3 ⅝" x 6 ½ "   * popular size
7 3.75" x 6.75" or 3 ¾" x 6 ¾"
7 ¾ 3.875" x 7.5" or 3 ⅞" x 7 ½"
Monarch 3.875" x 7.5" or 3 ⅞" x 7 ½"   Pointed flap
8 ⅝ 3.625" x 8.625" or 3 ⅝" x 8 ⅝"   Check
9* 3.875" x 8.875" or 3 ⅞" x 8 ⅞"   * popular size
10* 4.125" x 9.5" or 4 ⅛" x 9 ½"   * popular size
11 4.5" x 10.375" or 4 ½" x 10 ⅜"
12 4.75" x 11" or 4 ¾" x 11"
14 5" x 11.5" or 5" x 11 ½"
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Commercial Square Flap
Flap on the Large Dimension
Contemporary flap adds style to any business correspondence.
Monarch SF 3.875" x 7.5" or 3 ⅞" x 7 ½"
9 SF 3.875" x 8.875" or 3 ⅞" x 8 ⅞"
10* 4 ⅛" x 9 ½"   * popular size
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Policy
Open End Flap on Short Dimension
10 Policy 4.125" x 9.5" or 4 ⅛" x 9 ½"
11 Policy 4.5" x 10.375" or 4 ½" x 10 ⅜"
14 Policy 5" x 11.5" or 5" x 11 ½"   * popular size
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Announcement
Square Flap on Large Dimension
For announcements, small booklets or even business stationery.
A style envelopes are made with text weight papers .
A1 3.625" x 5.125" or 3 ⅝" x 5 ⅛"
A2* 4.375" x 5.75" or 4 ⅜" x 5 ¾ " *popular size
A6* 4.75" x 6.5" or 4 ¾" x 6 ½" *popular size
A7* 5.25" x 7.25"or 5 ¼" x 7 ¼" *popular size
A8 5.5" x 8.125" or 5 ½" x 8 ⅛"
A9 5.75" x 8.75" or 5 ¾" x 8 ¾"
A10 6" x 9.5" or 6" x 9 ½"
Slimline 3.875" x 8.875" or 3 ⅞" x 8 ⅞"
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Baronial
Pointed Flap on the Large Dimension
Classic design with a pointed flap for formal business announcments, invitations
and change of address .
4 Baronial 3.625" x 5.125" or 3 ⅝" x 5 ⅛"
5 Baronial 4.125" x 5.625" or 4 ⅛" x 5 ⅝ "
5 ½ Baronial* 4.375" x 5.75" or 4 ⅜" x 5 ¾" *popular size
6 Baronial* 4.75" x 6.5" or 4 ¾" x 6 ½" *popular size
Lee* 5.25" x 7.25" or 5 ¼" x 7 ¼" *popular size
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Catalog
Open End Flap on the Short Dimension
inserted by hand
1 Catalog 6" x 9" *popular size
1 ¾ Catalog 6.5" x 9.5" or 6 ½" x 9 ½ "
3 Catalog 7" x 10"
6 Catalog 7.5" x 10.5" or 7 ½" x 10 ½"
8 Catalog 8.25" x 11.25" or 8 ¼" x 11 ¼"
9 ¾ Catalog 8.75" x 11.25" or 8 ¾" x 11 ¼"
10 ½ Catalog* 9" x 12" *popular size
12 ½ Catalog* 9.5" x 12.5" or 9 ½" x 12 ½" *popular size
13 ½ Catalog* 10" x 13" *popular size
14 ½ Catalog 11.5" 14.5" or 11 ½" x 14 ½"
15 Catalog 10" x 15"
15 ½ Catalog 12" x 15.5" or 12" x 15 ½"
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Booklet
Open Side Flap on the Long Dimension
inserted and sealed with equipment
3 Booklet 4.75" x 6.5" or 4 ¾" x 6 ½ "
4 ½ Booklet 5.5" x 7.5" or 5 ½" x 7 ½ "
5 Booklet 5.5" x 8.125" or 5 ½" x 8 ⅛ "
6 Booklet 5.75" x 8.875" or 5 ¾" x 8 ⅞ "
6 ½ Booklet* 6" x 9" *popular size
6 ⅝ Booklet 6" x 9.5" or 6" x 9 ½ "
6 ¾ Booklet 6.5" x 9.5" or 6 ½" x 9 ½ "
7 ¼ Booklet 7" x 10"
9 Booklet 8.75" x 11.5" or 8 ¾" x 11 ½"
9 ½ Booklet* 9" x 12" *popular size
10 Booklet* 9.5" x 12.625" or 9 ½" x 12 ⅝" *popular size
13 Booklet* 10" x 13" *popular size