Business correspondence envelopes come with a variety of flap styles and sizes.
The most common is the number 10 with either a commercial flap or a square flap. These envelopes are designed for machine insertion making them an ideal and efficient choice for direct mail, invoices, checks and statements. Commercial envelopes are also often used for letterhead and personal correspondence. They open along the top edge and have diagonal seams.
Square flap business envelopes are often used to add a contemporary flair to correspondence. These envelopes are well suited for engraving, thermography and other printing processes, but are not recommended for automatic insertion equipment.
With the opening on the end of the envelope, policy envelopes are often used for custom marketing material and invitations.
Engineered to ensure maximum opacity which provides for a more confidential presentation, DL International envelopes are available in CRANE'S CREST® Papers only.