USPS 421 Window Clerk Exam Study Guide 2023

USPS 421 Window Clerk Exam Study Guide 1. GIST: Greeting Customers, Inquiring their needs, Suggesting options best to the customers' needs and Thanking them for coming to the US Postal Service 2. Processing Categories: Letters, Flats, Machinable Parcels, Irregular Parcels, and Outside Parcels. 3. Letter-Size Mail: Rectangular, Between 3.5" to 6 1/8" high, 5" to 11.5" long and .007" to .25" thick. Max weight 3.5 oz 4. Postcards: Rectangular, between 3.5" to 4.25" high, 5" to 6" long and .007 to .016 thickness 5. Flat-Size Mail: Flexible, Uniformly thick, Rectangular, Minimum: 6 1/8" high OR more than 11.5" long, OR more than 1/4" thick. Maximum 12" high, 15" long and 3/4" thick. One of the minimum flat-size dimensions MUST exceed maximum letter-size dimensions. 6. Machinable Parcels: Must weigh at least 6 ounces but no more than 25 pounds. High density parcels maximum weight is 15 pounds.(exception for lightweight parcels) 7. Irregular Parcels: Must have any one of the following characteristics: Less than 6" in length, or less than 3" in height, or less than 6 ounces. Rolls and tubes 26" long or less. Unwrapped, paper-wrapped, or sleeve-wrapped articles that are not letter size. And articles enclosed in envelopes that are not letters, flats or machinable parcels. 8. Outside Parcels: Length more than 27", or height than 17", or thickness more than 17". Weight more than 25 pounds or 15 pounds if identified as high density. Rolls and tubes longer