Columbian #10 Security Envelopes 500 Pack Self-Seal No Window 4-1/8 x 9-1/2 Inch 24lb White Paper

• Amazon now offers Columbian #10 Security Envelopes, 500-Pack, Self-Seal, now $21.28 (was $23.99).
• Prime members get free two-day shipping, and regular members get free shipping on orders over $35 within the contiguous U.S.
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Editor's Pick: For mailing sensitive documents like pay stubs or bank statements, the blue security lining prevents others from peeking at the contents when held up to light. The self-seal flap is easy to peel and press—no licking glue needed, so sealing hundreds of envelopes won't tire you out. The paper is thick and sturdy, reducing jams when feeding through machines. A box is great for office or home use and lasts a long time.