: Features a blue/patterned interior to prevent prying eyes from reading sensitive data.

Quality Park Redi-Strip Security Tinted Business Window Envelopes Go to product viewer dialog for this item. BSN Economical No. 10 Window Envelope $52.64$113 Go to product viewer dialog for this item. Specialized Security & Check Envelopes Aimoh Double Window Security Envelopes Go to product viewer dialog for this item.

: Features a strip that seals instantly without moisture.

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Quality Park Redi-Seal Security Tinted #9 Double Window Envelopes Go to product viewer dialog for this item.

💡 For professional look and efficiency, "Peel & Seal" (like those from Staples ) is generally preferred over "Gummed" flaps to avoid the mess of moistening.

: The 4 1/8" x 9 1/2" business staple for letters and invoices.