<b>Quality-Mail #10 Envelope, Peel & Seal, Security Tint, 250 Per Box</b><br> Ideal for home or office, the all-purpose Quality-Mail #10 Envelope, Peel & Seal, Security Tint, 250 Per Box makes an excellent alternative to low-quality envelopes that tear easily and offer little security. Each #10 envelope measures 4-1/8 by 9-1/2 inches, which nicely accommodates a variety of paper sizes, including standard 8-1/2-by-11-inch sheets of letter-size paper folded into thirds. Whether it’s for personal or professional use, Quality-Mail security envelopes make it easy to mail with confidence.