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The #6 3/4 is the compact commercial letter envelope used for short-form correspondence, return mail programs, and any mailing where a full-size #10 is more envelope than the contents require. This version combines two features that serve sensitive correspondence at this size: a security tint interior that blocks document contents from showing through the paper when held to light, and a peel-and-seal closure that bonds on contact pressure with no moisture required. Built from 24 lb bright white wove with a windowless face. Available blank or with custom logo and return address printing from Business Envelopes. Free shipping on every order with no minimums.
White paper is not fully opaque. Under a light source, text printed on a document inside a standard white envelope becomes at least partially readable through the paper wall. For a routine office letter the risk is minor. For a short-form correspondence piece carrying a check, a personal account number, a patient ID, or any other sensitive identifier, that light transmission is a genuine privacy exposure in transit, at the recipient's mail station, and in any shared mail handling environment.
The security tint is a pattern printed on the interior surface of this envelope. The pattern creates visual interference between the paper surface and the document text, making contents unreadable through the envelope wall even when held directly against a light source. This is structural privacy protection built into the envelope itself, not dependent on the weight of the paper or the density of the contents. The "uncoated security tinted envelopes" and "uncoated self seal envelopes" queries both land here because the tint is applied to uncoated white wove stock, which is the standard commercial envelope surface that accepts custom printing and labels cleanly.
Buyers searching "center self seal envelopes" are typically looking for a self-seal format where the adhesive runs centered across the flap rather than a strip positioned toward the outer edge. The peel-and-seal strip on this envelope is centered on the inside of the flap seam, which is the standard commercial position. Peel the protective liner from the pressure-sensitive strip, fold the flap down, press firmly along the center of the seam. The bond activates on contact at room temperature. No moisture, no sponge, no variation across pieces in a batch. The seal holds through postal sorting and delivery, and the liner removes cleanly without leaving adhesive residue on the flap edge.
For the same #6 3/4 tinted format with a moistenable gum flap instead of peel-and-seal, see the #6 3/4 White Tinted Gum Flap. For the plain white #6 3/4 without security tint, see the #6 3/4 White Gum Flap. For the same security tinted peel-and-seal format in the larger #9 size used as a return envelope inside a #10 outgoing piece, see the #9 White Tinted Peel and Seal. For the full range of security tinted formats across all sizes, browse the #10 envelope range and the self-seal envelope category. Ships same or next business day on blank stock. Custom printed orders ship in 7 to 10 business days from proof approval.
The envelopes are perfect! I’ve purchased them before and will keep buying over and over again.
love the seal strip and security feature. The price is great