Unenveloped letter-size mailpieces prepared for automation price mailings must be secured (tabbed) to prevent an open edge from jamming high-speed processing equipment. Standards for tabbing are based on basis weight of paper stock used and the location of the folded or bound edge.
Letter-Size Folded Self Mailers:
Folded edge must be on bottom, or lead edge of mailpiece
With 1 tab - folded edge at bottom of mailpiece; 2 tabs, 1” from each edge of top edge of mailpeice.
Single folded sheet- minimum basis weight 70#
Two or more sheets- minimum basis weight 60#
With 2 tabs- minimum basis weight 50# if folded edge is at top or bottom of the mailpiece. Tabs must be placed within 1 inch of the right and left edges of mailpiece.
With folded edge on right (leading) edge: left (trailing) edge and top edge must be secured with at least one tab or a glue line each; additional tabs may be required based on trim size and basis weight.
Letter and Flat Size Booklet-Type Mailers:
A booklet qualifies any piece that stitches. There are multiple variables that need to be taken into consideration. Please consult your salesperson for assistance.
For additional information and diagrams- please reference pages 20 & 21 of the May 2009 USPS Quick Service Guide.
For additional information regarding booklets, reference section 201.3.16 of the DMM as booklet specs were updated September 2009.