Quality envelopes that offer privacy and efficient mailing service. Choose from a variety of sizes and styles to match your office needs. Personalize with your practice name and address. All except single-window envelopes are designed for use in ink-jet and laser printers. Those with windows feature clear poly film. Upon request and at no additional charge, we will add your bar code, abbreviate your address, and eliminate punctuation to comply with postal service recommendations. Please include your nine-digit zip code when ordering.