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The interior of our #10 Security envelopes use a dark navy, heavy coverage security tint to offer the protection contents and sensitive information, a security tint makes envelopes hard to see through that ensures upmost privacy. Our #10 envelopes are designed with an ultra strong SELF-SEAL adhesive strip to create a full, super secure seal across each envelope's width that won't easily open or tear, ideal for mailing for any letter sized and larger documents without splitting. Only sender and return address will show on your QuickBooks invoices and monthly bills through our unique 2 window . No show of memo, Payee line or amount in windows. Perfectly fits QuickBooks Invoices and business billing statements We understand how difficult it can be to find secure envelopes that completely secure and hide your envelope contents throughout the mailing process. We understand this frustration; thus our envelope design protects your contents. - Large, windowless design measuring 4-1/8 x 9-1/2 inches. - Professional security tint pattern protects sensitive information. - Pre-gummed quick seal strip creates a tough, secure seal. - Compatible with most inkjet and laser printers for easy printing. - Convenient 500 envelope supply!






