The 6 X 9 booklet envelope is a large-sized envelope made specially to house unfolded pieces of documents. This particular 6 X 9 white booklet envelopes are perfect for regular office usage. They can be used to send documents that cannot be folded such as contracts, large marketing materials, photographs, magazines, catalogs, and more. These envelopes have a simple classical booklet style with rectangular flaps and a moisture-activated sealing system. Companies can choose to get their logos and contact information pre-printed when ordering. These envelopes are made using 24 lbs pure white stock paper, which makes them ideal for regular office usage.