Related Clues:

• Copier tray abbr.
• Abbr. on a copier paper tray
• Wd. component
• Monogram pt.
• U.S.P.S. delivery
• Brief correspondence?
• Word unit: Abbr.
• A, B, or C: abbr.
• USPS unit
• Env. filler
• USPS piece
• Envelope enclosure: Abbr.
• A secy might take one from a CEO
• 8 1/2'' x 11'' size, briefly
• It's put in an env.