ELCO Envelope proclima C5 – Eco-friendly mailing solution without window
The ELCO envelope proclima C5 is a windowless envelope made from sustainable paper. It is ideal for everyday postal mailing where discretion and environmental protection are priorities.
Self-seal closure for quick and clean sealing – no licking or moisture needed.
500 pieces per box – sufficient for office use or commercial shipping.
FSC® certified paper and Blue Angel – guaranteed eco-friendly production.
C5 format (162 × 229 mm) – perfect for A4 sheets (folded once).
What sets the proclima envelope apart
The proclima series by ELCO combines functionality with sustainability. The envelope is made from recycled paper and is awarded the Blue Angel, confirming strict environmental standards. Without a window, it provides a neutral surface for address labels and maximum privacy.
Ideal for…
Ideal for environmentally conscious companies, authorities and private individuals who regularly send letters and value sustainability. Also suitable for sending confidential documents, as the contents are not visible from the outside due to the missing window.
How to use the proclima envelope
Simply insert your document, remove the protective film from the self-seal strip and close the envelope. Address the front as required. The envelope is suitable for use through standard postal sorting machines.
ELCO is a Swiss manufacturer of office and packaging materials with a focus on sustainability. The brand offers eco-certified products such as envelopes, shipping bags and paper goods. ELCO products meet strict environmental standards, including Blue Angel and FSC certification.
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