GORH DL Envelope Apollo Bay 220×110mm – Window Faced, Peel & Seal Secretive is a professional mailing envelope ideal for business correspondence and invoices. Featuring a standard DL size (220×110mm), window faced design, easy Peel & Seal closure, and Secretive security pattern for privacy protection. Printed CMYK single side, and supplied in a box of 500 envelopes — a secure, efficient, and cost-effective solution for high-volume mailings.