Use our booklet envelopes to mail anything from brochures to literature to catalogs. Booklet envelopes have the flap along the long side for ease of loading your materials. Made of quality 24 lb paper or 28 lb paper, these side open envelopes come as 6 x 9 envelopes, 9 x 12 envelopes, or 10 x 13 envelopes.
Looking for catalog envelopes that have the flap along the short dimension? Browse our catalog envelope selection for open end catalog envelopes.