Square Envelopes 155x155 mm, Black

A striking look: Square envelopes, 155x155 mm, in black

A square envelope in deep black makes a strong visual statement. Whether used as an elegant mourning envelope for dignified messages or as a stylish envelope for exclusive wedding invitations—these envelopes immediately catch the eye. Thanks to their square format of 155x155 mm, they stand out pleasantly from the standard and prevent your mail from being accidentally overlooked among promotional mailings.

The black paper provides an excellent base for a particularly elegant design. When addressed with a gold or silver metallic pen, these envelopes look exceptionally festive and high-quality. The windowless envelopes are traditionally sealed with a pointed flap using a moisture-activated adhesive, ensuring clean and secure mailing.

Technical Details and Applications

• Format: Square envelopes, 155 x 155 mm
• Color: Black
• Paper weight: 80 g/m² (sturdy paper suitable for various occasions)
• Closure: Self-adhesive with a pointed flap
• Suitable for: condolence cards, thank-you notes, elegant wedding invitations, and creative mailings
• Special feature: Windowless, offering a unique look for a personalized design

Black is a timeless color that lends your messages an air of professionalism or modern elegance. When you order from us, you’ll benefit from high quality and precise quantity accuracy. Discover our diverse selection for your correspondence in the square-sized envelopes category. If you’re looking for specific formats for your mail, our mourning envelopes section offers a selection of suitable envelopes for every need.