Some documents such as agreements and contracts are too important to be folded or creased. This is why businesses rely on large 9 X 12 booklet envelopes to send contracts, magazines, large product catalogs, and documents that shouldn’t be folded. These 9 X 12 envelopes have an open-sided design and they are machine insertable. Made from 24 lbs white stock paper, these envelopes come with a moisture-activated sealing system. These envelopes are made to fit multiple, unfolded A4 sheets. These envelopes have a windowless design with dual parallel seams and a rectangular flap.
These booklet envelopes have an internal pocket space of 8.75 x 11.5 inches, which is good for most standard-sized magazines and booklets. When ordering printed stock, Customers can upload their black and white company logo and get them printed on these envelopes for free. The 9 X 12 white envelope is the most economical envelope of this size, making them perfect for regular use.