500 Blue Summit #9 Double Window Security Envelopes Self Seal for Quickbooks Invoices and Business Statements Double window envelopes self seal #9-3 7/8 Inch X 8 7/8 Inch, 500 Pack

This is a great product and at a very reasonable price. As a small membership-based nonprofit we send out an acknowledgement for every donation received. Having a quality #9 double window self seal security envelope has eliminated the need for hand addressing or generating mailing labels. Our logo and up to 4-line addressing fit the windows perfectly. The benefit of all the time saved and the professional look easily justifies the cost of the product.

Repeat irder

Self adhesive envelopes that work good for QuickBooks invoices and statements.

These envelopes are much better than the ones I was previously purchasing. The amount of adhesive on the envelopes is just right and when you pull the strip to seal you don't end up with sticky residue in the pull strips or your hands. I will continue to order these envelopes.

The envelopes seem to be well made and they seal easily without appearing to come loose. The double windows line up correctly. The only reason I don't rate them five stars is because I have not used them for very long.

Great price, easy to seal self adhesive envelopes..

MUCH BETTER THAN HARD TO FIT QUICK BOOK DOUBLE FOLD SEAL ONES. LOVE THEM. THE TOP WINDOW SHOWS THE PAY TO THE ORDER OF AND THE ADDRESS SHOWS THRU THE BOTTOM PART. LOOKS GOOD AND AGAIN MUCH EASIER TO PUT CHECKS IN THE ENVELOPE. ALSO 20 BUCKS CHEAPER THAN RIP OFF QUICK BOOK ENVELOPES.

I purchased these to use with QuickBooks-compatible checks. They work for that purpose. That said, the "Memo" line is entirely visible in the envelope as are the words "Pay to the order of" along with the payee's name. In other words, prying eyes can tell what's inside, what it's for and whom it concerns. Thus, these are not the best for privacy. On the other hand, the address windows (both to and return/from) are large enough to clearly see, making the envelopes suitable to mailing (with the exception of privacy concerns). The edge here is that there is plenty of room to include additional pages along with the check (which was a problem with other envelopes: others were so small that only the check and no other pages would fit). The extra space inside is refreshing. Overall, I think I'll stick to using these for in-hand/in-person transactions rather than for mailing due to the noted privacy concerns.

I’ve been using these for years for invoicing and they are perfectly designed.

Perfect for invoices and checks.

Windows are too big