ELCO Couvert Premium C5/6 – Premium White Envelope with Window, 500-Pack
The ELCO Couvert Premium C5/6 is a high-quality white envelope with a left-side window, designed for professional correspondence and business mailings. FSC-certified paper ensures responsible sourcing while the C5/6 format accommodates standard A4 documents folded to half or quarter size.
Left-side window for easy recipient address visibility without opening the envelope
FSC-certified paper — responsibly sourced and environmentally certified
500-piece pack provides ample supply for regular business or office mailing needs
Premium white finish delivers a clean, professional appearance on every envelope
What sets the ELCO Couvert Premium C5/6 apart
The integrated left-side window eliminates the need to print or handwrite the recipient address on the envelope front, streamlining the mailing process. The C5/6 format is versatile enough for half-folded A4 letters as well as quarter-folded documents, making it suitable for invoices, statements, and formal correspondence.
Ideal for...
Office administrators, accounting departments, and HR teams that send regular correspondence in bulk. The 500-piece pack is designed for organisations with moderate to high mailing volumes, ensuring a reliable supply without frequent reordering.
Application of ELCO Couvert Premium C5/6
Insert the prepared letter or document into the envelope with the window aligned to the left
Ensure the recipient address is visible through the window before sealing
Seal the envelope and affix postage for standard business mail
Use for invoices, statements, contracts, or any formal business correspondence
ELCO is a Swiss manufacturer of premium office and stationery products, specialising in envelopes, paper, and mailing supplies. The brand focuses on quality materials and practical design for professional and personal use. ELCO products are widely available through Swiss retail channels.
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