Single Window Envelopes

Clear address visibility supports invoices, billing statements, checks, business letters, donation mail, notices, and direct mail campaigns. JAM Paper single-window envelopes include standard address windows, right-side windows, bottom-left windows, vertical windows, and offer windows, along with machine-insertable styles for recurring office mail. Common choices include the standard #10 size, along with 6 x 9-inch and 9 x 12-inch envelopes for larger documents and several other sizes for folded correspondence.

Paper weights range from 24 lb to 68 lb, with options in white, security-tinted paper, kraft, linen, woodgrain, pastel shades, and bright solid colors. This material range makes single-window mailers useful for everyday billing, professional correspondence, non-profit communications, school mailings, and branded campaigns. Security-tinted styles add privacy for sensitive paperwork, while distinctive papers and colors provide alternatives for organizations that want mail to stand apart without changing the basic window-envelope workflow.

Select styles are marked machine insertable or laser safe, while other options include peel & seal or simple seal closures for efficient preparation. These features support offices that process regular statements, invoices, checks, customer notices, and other recurring documents that require consistent processing. From standard commercial mail to larger open-end and booklet-style document envelopes, the collection gives businesses practical single-window choices for automated mailrooms, manual fulfillment, direct mail, and everyday correspondence.