Abstract: A mailer or business form intermediate including a built-in reply envelope. The mailer comprises a single substrate sheet divided into four panels. At least three of the four panels are of substantially the same longitudinal dimension. The reply envelope is fashioned from the second and third panels upon folding. A closure flap for the reply envelope is also included. The mailer also contains provisions for including a number of partitions for labels or statements, a two-ply card, or a window for addresses.

Abstract: A mailer assembly which can be supplied to a user in intermediate form and which, when assembled and sealed, has an enhanced ability to shield confidential information from unauthorized view is provided. The mailer assembly may also include an integral return envelope and also may be designed so that variable information can be printed on the sheets making up the mailer prior to assembly using nonimpact printers such as laser printers which use heat and pressure to fuse toner to paper. The mailer assembly includes first and second sheets in superimposed relation, with each of the first and second sheets having a pair of marginal side edges and a pair of end edges. The mailer further includes removable marginal side and end strips for opening the mailer. The first and second sheets are secured together parallel to their respective marginal side and end edges to form a subassembly.