6.4" x 9" Envelopes, A9 Mailing Envelopes, Thick White Self Seal Envelopes, Business Envelopes, Envelopes Letter with Self-Seal Adhesive Strip, White 50 Count

These envelopes feature a standard 229x162mm (9" x 6.4") size, fitting A4 paper folded twice, letters, invoices, checks, greeting cards and more, ideal for daily business mailing, personal correspondence and office use.

• 【A9 Size】These A9 mailing envelopes feature a size of 229x162mm (9" x 6.4") , fitting A4 paper folded twice, letters, invoices, checks, greeting cards and more, ideal for daily business mailing, personal correspondence and office use.
• 【Secure Self-Seal Closure】Equipped with a reliable self-seal adhesive strip, these self-seal envelopes offer a quick, permanent seal. Simply peel and press for a tamper-evident closure, saving your time .
• 【Thick Paper】Crafted from premium thick white paper, these mailing envelopes are sturdy and fully opaque, effectively protecting your confidential documents from damage and prying eyes during transit, ensuring safe delivery.
• 【Multi-Purpose】These versatile A9 white envelopes are suitable for a wide range of scenarios: business correspondence, invoices, checks, wedding invitations, greeting cards, bills, school projects and more, meeting all your daily mailing and organization needs.