#10 Self-Seal Security Envelopes (500/Box) ENVELOPES / MAILERS back and spine

back and spine

These 4 1/8" x 9 1/2" inch self-sealing windowed envelopes are designed to save your time and money

apply proper amount of glue on the paper

Permanent paper mending

Great for teacher

#10 Self-Seal Security Envelopes (500/Box) ENVELOPES / MAILERS back and spinePRODUCT DETAILS #10 SECURITY ENVELOPES. These 4 1 8" x 9 1 2" inch envelopes are designed with security print to protect contents and sensitive information, perfect for protecting sensitive information from others. SECURE. Just peel and seal to create a strong lasting seal without licking or moistening. Our self seal design is quick and easy and is guaranteed to stay sealed with no need for tape or glue sticks. WINDOWLESS DESIGN. Envelopes