Tri-fold: The letter size, 8.5 x 11 trifold is common for brochures as well as business letters and newsletters. The paper is folded into three parts. We utilize this fold when building brochure style invitations with the information positioned on the 6 panels (counting both sides of the paper) with two parallel folds in a spiral fold configuration. Alternately we use this fold when printed on just one-side and viewed as you would a typical letter. The invite is paired with tickets to the advertised event, inserted into a standard #10 envelope, addressed and has an actual stamp adhered.
Also Known As: business letter | letter fold | c-fold | brochure fold | spiral fold