Elco Office Couvert C5/6 – White Window-Left Envelope, 50-Pack
The Elco Office Couvert C5/6 is a professional white envelope with a window on the left side, designed for standard C5/6 correspondence. Made from FSC®-certified paper, it combines reliable quality with environmental responsibility for everyday office mailing.
Window on the left side for easy recipient address visibility
FSC®-certified paper — sourced from responsibly managed forests
Pack of 50 envelopes — sufficient for regular office correspondence
C5/6 format fits standard A6 and A5 documents folded to letter size
What sets the Elco Office Couvert apart
The left-side window eliminates the need to print or handwrite the recipient address on the envelope, streamlining the mailing process in busy office environments. The FSC® certification ensures the paper comes from verified sustainable sources, supporting corporate environmental goals without compromising print quality or durability.
Ideal for...
Office administrators, mailroom teams, and HR departments handling regular outbound correspondence. The C5/6 size is particularly suited for internal memos, invoices, and standard business letters that require a clean, professional presentation with a discreet window for address visibility.
Application of Elco Office Couvert C5/6
Insert the letter or document into the envelope with the printed side facing the window
Ensure the recipient address aligns with the left-side window opening
Seal the envelope by moistening the adhesive strip and pressing firmly
Sort and dispatch as part of the regular office mail batch
ELCO is a Swiss manufacturer specializing in office stationery and mailing supplies, including envelopes, labels, and packaging materials. The brand focuses on practical, cost-effective solutions for everyday business correspondence and document handling.
It is a white office envelope in C5/6 format with a left-side window, designed for standard business correspondence such as letters, invoices, and memos.
The envelope is made from FSC®-certified paper, which is sourced from responsibly managed forests and meets recognized environmental standards.
Each pack contains 50 envelopes of the Elco Office Couvert C5/6 size.
The window is positioned on the left side of the envelope, allowing the recipient address to show through clearly.
Yes, the C5/6 format accommodates A4 documents folded to letter size, as well as A5 sheets, making it versatile for standard office mail.
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