500#9 Single Window Security Envelopes with Thick Gummed Seal - Secure Mailing for Payroll Checks, QuickBooks Invoices, Business Statements & Return Mail (3 7/8" x 8 7/8") - Perfect for Office, Accounting & Confidential Document Protection

#9 Business Envelopes with Security Tint and Secure Seal A standard security envelope that’s ideal for everyday business use, our #9 mailer is made from durable 24lb white wove paper and keeps your documents safe and secure with a strong glue seal and dark security tint lining. This envelope is equipped with a low profile flap design, making it easy to fold and stuff up to 10 sheets of standard letter size paper inside with room for a #8 return envelope so your clients can quickly return payments. 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, simple enough for everyday letters and statements, yet professional and secure enough for high-profile business communications. Blue Summit Supplies Secure Seal Types Peel & Seal! Simply pull the backing off the envelope's flap to reveal an adhesive strip that can be folded over and pressed down to seal contents safely inside. Gummed! Moisten the strip of adhesive found on the envelope's flap and fold over to seal contents securely inside. Flip & Seal! No moisture is required, just flip up the bottom flap, fold over the top flap and press to secure contents safely inside. Secure Closure Types: Gummed, Flip & Seal, Peel & SealIndustry Standard Durable 24lb White Wove PaperCross-Hatch Security Tint Keeps Contents Concealed Compare Blue Summit Supplies #9 Business Envelopes

Perfect for mailing payroll checks, QuickBooks invoices, billing statements, confidential documents, and other business mail.

No need for tape or glue sticks as our strong gummed seal creates a hassle free and safe seal for all your sensitive documents.

Provides complete business mail security your professional business mail will be completely hidden with our dark security tint design

Create professional looking mail with the added security of a single window envelope. Your business mail recipient address will show through the single window and you can quickly print your return address or add return address labels

Tamper proof design with our hot melt glue adhesive manufacturing process that allows the glue to penetrate the envelope, thus causing the envelope to tear if you open after sealing