Widely used for business and personal correspondence. Commercial and Side Seam flap styles are ideal for machine insertion. Wallet flaps provide a large area ideal for imprinting. Square flaps are contemporary, but not recommended for machine insertion.

 

This style is ideal for annual reports, brochures, sales materials, and more. The open side makes it acceptable for automatic insertion.

Center seam makes this style more durable for mailing heavy-weight materials. These envelopes can not be processed through inserting equiptment or run through a laser printer.

 

This unusual shape attracts attention to contents. Square envelopes are nonstandard and require additional postage to mail.

 

Also called A-style, this contemporary design is idea for photographs, greeting cards, small booklets, and promotional pieces. Do not confuse the A-4 size with metric A4 paper, which fits into a DL size Commercial envelope.