#10 Security Envelopes - White Security Tint, 24lb

#10 envelopes are designed for standard 8.5 x 11 inch documents folded in thirds (tri-fold). This is the most common business letter format and works perfectly with letters, contracts, invoices, statements, and other business correspondence. The envelope dimensions are 4 1/8 x 9 1/2 inches, making them the standard business envelope size used across all industries.

Yes! Our #10 envelopes are compatible with all standard laser printers, inkjet printers, and copiers. The smooth 24lb white paper provides an excellent printing surface for direct addressing. Most word processors and mailing software (including Microsoft Word, Google Docs, and mail merge programs) have built-in #10 envelope templates. You can also hand-address them or use adhesive address labels.

Peel & seal envelopes feature a self-adhesive strip—simply remove the protective strip and press to seal. They're faster and more convenient for high-volume mailing. Gum seal (also called moistening seal) requires moisture to activate the adhesive, offering a traditional, professional finish. Both seal types are equally secure. Choose peel & seal for convenience or gum seal if you prefer the classic approach.

Standard #10 envelopes without windows are ideal for confidential documents as they provide complete privacy—nothing is visible from the outside. For added security with checks or highly sensitive information, consider our #10 Security Envelopes which feature interior security tint patterns that prevent readability when held up to light. However, regular #10 envelopes offer excellent privacy for most business correspondence, legal notices, and confidential letters.

Windowless #10 envelopes are the most versatile business envelope option. They're perfect for direct mail campaigns, thank you letters, confidential correspondence, legal documents, promotional materials, hand-addressed invitations, and any situation where you need addressing flexibility or maximum privacy. Unlike window envelopes, you're not limited to specific document formatting—any addressing method works, making them ideal for diverse mailing needs.