What is a standard window envelope? Is it the same as a commercial window envelope?
Yes, a standard and commercial window envelope are one of the same. Sizes range from a #6-1/4 to #14 size (which is industry lingo) and not necessarily the true size (see below for exact envelope sizes). The paper used is typically a 24 # (pound) white wove stock which is equivalent to a 60 # (pound) offset stock, or also sometimes referred to as a 20# (pound) bond, depending on the style selected. Their applications are used mostly for business correspondence such as mailing invoices, statements, business letters, personal letters, checks and marketing applications. Also known as, open side diagonal seam type envelope.
