Blue Summit Supplies


Blue Summit Supplies Envelopes, #9 Envelopes, Invoice Envelopes, White, Double Window, Security Tint, Flip & Seal, 500-Pack

In offices that send a high volume of business mail, making the process as quick and streamlined as possible is key. Eliminate the hassle of having to moisten standard gummed seals or removing the protective strips used in peel and seal envelopes; you need to go for the easiest closure of all, which you’ll find in flip and seal envelopes. No licking, peeling, or taping required; simply flip up the folded edge, then flip down the flap!

A standard security envelope that’s ideal for everyday business use, our #9 mailer keeps your documents safe and secure behind the strong glue seal throughout transit and a dark security tint lining. Made from a durable 24lb white wove paper, this envelope can easily hold up to 10 sheets of standard letter size paper inside. It can also be used as a return envelope itself when sent inside a #10 envelope, making the #9 one of our most versatile envelope choices that’s simple enough for everyday letters and statements, yet professional and secure enough for even high-profile business communications.


#9 Double Window Security Envelopes, Flip and Seal, 500 Count

Part #: BSS-92588-007