500#10 Flip and Seal Double Window Security Envelopes-Perfect Size for Multiple Business Statements, Quickbooks Invoices, and Return Envelopes

?Save time with the easy to use flip and seal self-seal design; No more headaches, or bad tastes in your month from licking envelopes; our self seal design allows for sending hundreds of invoices quickly and easily. ?Perfect for mailing Invoices, QuickBooks Invoices, billing statements, checks, and other business mail. Your return and sender address will line up perfectly. ?Provides complete business mail security: your invoices and statements will be completely hidden with our security design. ?Save time quickly stuffing multiple pieces of business mail in our wide and large #10 Security Envelope Design. You can even stuff smaller #9 or #8 return envelopes to get your invoices paid quicker. ?No need to spend time and money stamping, adding return labels, or spending extra money on custom envelopes, just quickly slide in your business mail to create professional looking business mail.