The window option gives and extra elegance to your envelopes. Window Envelopes are the most convenient way to mail invoices, bills, statements and any business mailing, by featuring addresses or selected contents through a clear plastic sheet window. Available in a variety of sizes, colors and window styles including; Single Window Envelopes, Double Window Envelopes, and Full Face Envelopes, which have an opening that covers the entire front of the envelope.
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