Blue Summit Supplies 500#9 Double Window Security Envelopes, Self Seal

About this item

• No. 9 Envelopes, Self Seal, Designed For QuickBooks Invoices – Businesses and accounting teams mailing invoices and statements use these #9 double window self seal envelopes designed to reveal and align return and recipient addresses for accurate billing without labels or manual addressing.
• Self Sealing No. 9 Double Window Envelopes with Fast Peel & Seal Closure – Offices and billing teams handling high-volume invoicing use these #9 self seal security envelopes with a peel-and-seal strip that creates a secure closure quickly without moisture, improving efficiency in accounts receivable workflows.
• Number 9 Double Window Envelopes with Privacy Tint – Businesses mailing financial documents use these two windowed #9 envelopes made from 24lb white paper with a printed security tint that helps reduce read-through and protect sensitive information during transit.
• Room For Statement Inserts – Offices, tax professionals, and nonprofits use these 2 window #9 envelopes measuring 3 7/8 x 8 7/8 inches, which support invoices plus additional pages such as inserts or return envelopes for structured mailing workflows.
• 500-Count Office Supply Pack – Small businesses, accounting teams, and administrative offices use this 500-count pack of #9 double window envelopes to maintain a dependable supply for recurring invoice runs and monthly statement processing.