Item
Envelope Size
Single Card
Narrowfold Card
Broadfold Card
French Fold
A-2
4⅜" x 5¾"
4¼" x 5½"
4¼" x 11"
5½" x 8½"
8½" x 11"
A-6
4¾" x 6½"
4⅝" x 6¼"
4½" x 12½"
6¼" x 9"
9" x 12½"
A-7
5¼" x 7¼"
5⅛" x 7"
5" x 14"
7" x 10"
10" x 14"
A-8
5½" x 8⅛"
5⅜" x 7⅞"
5¼" x 15½"
7¾" x 10½"
10½" x 15½"
#9
37/8" × 87/8"
#10
41/8" × 91/2"
MOST COMMON ENVELOPE SIZES
FLAP TYPES
Following each size are suggested flat size dimensions for the most common insert formats.
ENVELOPE BASICS
Monarch
Commercial
Catalog
Booklet