500 no. 9 flip and seal double window security envelopes - designed for quickbooks invoices and business statements with self seal flip press and seal flap -number 9 size 3 7/8 inch x 8 7/8 inch blue summit supplies <p> <strong> save time sending invoices with our quickbooks invoice envelopes </strong></p> <p> quickly and easily send hundreds of business invoices or statements with our wide envelope design and our easy to use flip and seal flap. </p> <p><ul> <li> just flip the bottom flap and press to seal. really easy to use so you can send invoices and statements quickly with no wasted plastic strips from the peel and seal design</li> <li> once sealed, no adhesive is exposed so you do not have to worry about the envelope sticking to other mail </li> </ul></p><p> <strong> business mail will be completely secure during transit </strong></p> <p> it can be so difficult to find envelopes that create a strong lasting seal thus forcing you to waste time using glue sticks or tape to close the envelopes. our invoice envelopes are designed to immediately create a strong seal so you do not have to worry about your contents being exposed to others. </p><p> unlike flip and seal envelopes that are messy and even after sealing can still stick to other mail, our peel and seal design quickly seals with no messy and the envelope will not stick to your other business mail </p><p> <strong>security with a professional look </strong></p> <p>it can be frustrating to purchase envelopes only to find them flimsy enough to have you worried about their durability during transit. our envelopes are made of 24 lb white wove paper that will provide a professional look from the box all the way to your destination</p> <p> <strong>100% money back guarantee</strong></p> <p> we stand behind our products completely. we understand that sometimes buying physical products can be difficult if you cannot physically see what you are buying, however, if our product is not exactly what you are looking for, or does not meet your expectation then send them back anytime for a 100 % refund. </p>