ELCO Premium Couvert C4 – FSC-Certified White Envelope with Window, 250 Pieces
The ELCO Premium Couvert C4 is a high-quality white envelope with a left-side window, designed for professional correspondence and business mail. Made from FSC-certified paper, it combines reliable performance with responsible sourcing.
250-piece box provides ample supply for regular business mailing needs
Left-side window ensures recipient address remains visible for efficient sorting
FSC-certified paper supports sustainable forestry practices
C4 format fits standard A4 documents folded once without trimming
What Sets the ELCO Premium Couvert C4 Apart
The C4 format (229 × 324 mm) accommodates A4 sheets folded in half, making it the standard choice for formal business letters and invoices. The white finish delivers a clean, professional appearance suitable for corporate correspondence.
Ideal for...
Office administrators, HR departments, and accounting teams that send regular volumes of business mail. The window placement and premium paper quality make these envelopes well-suited for invoices, statements, and formal notifications where a professional impression matters.
Application of ELCO Premium Couvert C4
Insert the prepared A4 document into the envelope with the open end facing up
Ensure the document is aligned so the recipient address area aligns with the left-side window
Seal the envelope by moistening the adhesive strip or using a tape dispenser
Process through standard postal or courier systems
ELCO is a Swiss manufacturer specializing in premium office stationery and mailing supplies. The brand focuses on quality paper products with environmental certifications, serving the professional and corporate segment with envelopes, paper, and related office consumables.
The C4 envelope is designed for business correspondence, including invoices, statements, and formal letters. It fits A4 documents folded once and features a left-side window for address visibility.
Each box contains 250 pieces, providing a sufficient supply for regular office mailing volumes.
The envelope is made from FSC-certified paper, ensuring it originates from responsibly managed forests.
The window is on the left side of the envelope, allowing the recipient address to show through for postal sorting.
C4 format measures 229 × 324 mm, designed to hold A4 paper folded in half without trimming.
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