500 - Pack #10 Security Envelopes Self Seal Envelopes 4-1/8" x 9-1/2"

Keep your sensitive documents secure with these professional #10 self-sealing security envelopes. Measuring 9.5 x 4.125 inches, these standard business-sized envelopes feature a convenient self-adhesive seal that eliminates the need for moistening. The built-in security tint pattern on the inside provides confidentiality by preventing contents from being viewed through the envelope. Perfect for mailing checks, statements, invoices, and other private correspondence, these white envelopes offer both practicality and peace of mind. The classic #10 size accommodates standard letter-sized documents folded into thirds, making them ideal for professional and personal mailings. Their reliable self-sealing design ensures your documents stay securely sealed during transit while saving you valuable time. These envelopes combine functionality with security features to meet your everyday mailing needs.