500 no. 10 flip and seal double window security envelopes - perfect size for multiple business statements, quickbooks invoices, and return envelopes -number 10 size 4 1/8 x 9 1⁄2 inch blue summit supplies <p> <strong> save time and money sending business mail with our # 10 security envelopes </strong></p> <p> quickly and easily send hundreds of business invoices or statements with our #10 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> enough room for return envelopes so you can get paid faster</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 with strong adhesives 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 weak sealing envelopes that allow your contents to fail out and become exposed, so much for a security envelope, our strong seal will guarantee the safety of your contents. </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. </p> <p><ul> <li> 24 lb white wove paper that creates a professional look and feel from out of the box all the way to your destination</li> </ul></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>