Security printing (also referred to as "security tinting") is an additional design printed on the inside of an envelope (usually a complex pattern) to prevent the contents from being read through the envelope. This is important when sending confidential information via post.
We can offer this feature on our Offset Output #10 envelopes (windowed or non-windowed) and Offset Output 9" x 12" envelopes. You can submit a Print Quote request to have this added to your envelope order. We will print them with a standard security pattern, however if you want us to use your own custom design, you may request this as well.