Booklet Open Side Envelopes Booklet envelopes
are used for a wide variety of mailing and shipping functions. They come
in standard size dimensions ranging from 4-3/4" x 6-1/2" to
10" x 13". They have side seam construction with a wallet flap
which is located on the longer of the two dimensions. The term
"open side" is sometimes used when referring to booklet
envelopes. Common uses are for mailing pamphlets, brochures, sales
literature, booklets, annual reports, and bulky materials that have some
thickness to them.
