500 Number 10 Single Window Envelopes - Thick Gummed Seal - Designed for Secure Mailing of Quickbooks Checks, Invoices, Business Statements, Personal Letters - 4 1/8 x 9 1/2

Business Envelopes with Single Left Window Layout – Offices and businesses mailing invoices, payroll notices, and QuickBooks checks use these #10 left window envelopes designed to display the recipient address clearly through the window, eliminating the need for labels and streamlining mailing workflows.

• Commercial #10 Envelope Fit – Office staff and administrative teams use these #10 window envelopes measuring 4 1/8 x 9 1/2 inches, which fit tri-fold letters, invoices, and statements to support consistent document insertion and daily business mailing tasks.
• Tinted Business Envelopes with Windows and Privacy Security Tint – Businesses mailing sensitive documents use these windowed envelopes with a printed security tint that helps reduce read-through, protecting payroll information, patient statements, billing details, and confidential correspondence during transit.
• Permanent Moisten-To-Seal Gummed Flap – Offices and mailrooms handling bulk mailings use these 24lb white wove, size no. #10 security envelopes with a pointed gummed flap that seals with moisture, providing a reliable, traditional closure for invoices, checks, and recurring statement mailings.