USPS FSS handbook for employees and customers.

Pictures of Low Volume Cases and "Sculch" Trays that were tested for possible use in an FSS environment.  This was only a test.  This may or may not be the way that residual mail and FSS mail are handled by letter carriers.

A Low volume case (LVC)

A carrier merging mail from a LVC into his "FSS" mail

A carrier merging residual mail pulled from a LVC into his FSS mail in the parking lot.  Notice the use of two FSS trays turned upside down to form a work platform.

A tray of "FSS" mail and a "Sculch" tray in the back of a vehicle in the parking lot during the merging of the residual mail from the sculch tray into the FSS (yellow) tray.

A carrier in the parking lot merging residual mail from a sculch tray into the "FSS" mail tray.

The Sculch Tray that is being used to "case" low volumes of residual mail for merging into the FSS mail.  This picture is in the parking lot following the office casing of the mail and during the parking lot merge.

Vertical Low Volume Case 

This case contains one inch separations with two addresses per separation, 80 deliveries per shelf.  The letters are merged into the DPS and the flats into the FSS.

Close-Up of Vertical Low Volume Case 

New video posting of the Flats Sequencing System (FSS) machine.

See a video of the the Flat Sorting Machine and more FSS information including deployment sites and dates. May 2007: USPS Flats Symposium overview and Briefing Paper concerning the Flat Sorting System.  Picture of an FSS tray of mail.  Picture of trays of FSS mail loaded on the FSS cart or CASTR.