500 No. 10 Self Seal Single Window Security Envelopes -Designed for QuickBooks Invoices and Business Statements - Computer Printed Checks with Strong Peel and Seal Flap - Number 10 Size 4 1/8 X 9 1/2

The #10 Left Window Security Envelopes are a game-changer for businesses looking to send hundreds of invoices, bill statements, and checks quickly and easily.

With our peel and seal flap design, you can stuff multiple pieces of mail into the envelope without any hassle.

Plus, the low profile window ensures that your contents are completely secure during transit.

Unlike other envelopes that may fail to create a strong lasting seal, ours will ensure the safety of your contents with a professional look and feel.

Don't settle for flimsy or weak envelopes - choose the #10 Left Window Security Envelopes for all your business mailing needs.