After all of your containers are prepared, then you’re ready to fill out a postage statement.
--Strapping keeps your mail secure throughout processing and transportation.
--Some Post Offices can waive the strapping requirement for containers of mail that stay local. Ask at your business mail entry unit.
--Although you are required to strap each tray, the Post Office does not provide strapping material. Most office supply stores sell it in rolls.
--Flats trays (deep tubs) have special lids that are available from the business mail entry unit. Sacks have cinching mechanisms attached to the handle.