Get organized and save time with this lot of 20 double window envelopes. Designed for personal and confidential use, these envelopes have a self-seal feature and a security tint to protect your privacy. Perfect for businesses and individuals alike, these envelopes are made for packing and shipping purposes and fall under the category of Other Envelopes & Mailers, Envelopes & Mailers, Packing & Shipping, Material Handling, Business & Industrial. The model name is Window Envelopes, and they come in a pack of twenty.