USPS 421 WINDOW CLERK EXAM UPDATED AND
REVISED IN 2025-2026 DECEMBER
Letters size max - ANSWER->6 1/8in in height and 11 1/2in in length
max 1/4in in thickness
Flats size max - ANSWER->15in in length and 12in in height and 3/4in in
thickness
Machinable Parcels - ANSWER->min 3in max 17in weight 6 oz min and
25lbs max
Rolls that are longer than machinable parcels - ANSWER->Irregular
Parcels
How many zones - ANSWER->8
effects zones 1-4 piece weighs less than 20lbs but longer than 84in and
is charged the 20lb price - ANSWER->Balloon Price
Effects zones 5-8 can't exceed 1728cu ft max 108in in girth - ANSWER-
>Dimensional Price
How often is the Postal bulletin printed - ANSWER->Bi-weekly
Where do we find a list of lost or stolen MO (money orders) -
ANSWER>Postal Bulletin and POS
, Postal Service___________ are available online and provide guidance
on regulations for domestic/international/administrative/personnel
fields support? - ANSWER->Directives
Priority Mail is delivered in - ANSWER->2-3 days
any mailable item that weighs less than 13 oz - ANSWER->First Class
Mail
Global Express Guarantee (GXG) is shipped in - ANSWER->1-3 days
No mail piece can weigh more than except standard post -
ANSWER>70lbs
EDDM - ANSWER->Every Door Direct Mail
Express mail is delivered in - ANSWER->1-2 days
what surcharge applies to items/parcels over 108 but no more than
130in - ANSWER->oversize /parcel post
PS Form 3816 - ANSWER->COD
PS Form 3816-AS - ANSWER->More than 3 COD articles are mailed at
one time
Parcel Post and zones 5-8 larger than 1 cubic foot use - ANSWER-
>Dimensional Pricing
REVISED IN 2025-2026 DECEMBER
Letters size max - ANSWER->6 1/8in in height and 11 1/2in in length
max 1/4in in thickness
Flats size max - ANSWER->15in in length and 12in in height and 3/4in in
thickness
Machinable Parcels - ANSWER->min 3in max 17in weight 6 oz min and
25lbs max
Rolls that are longer than machinable parcels - ANSWER->Irregular
Parcels
How many zones - ANSWER->8
effects zones 1-4 piece weighs less than 20lbs but longer than 84in and
is charged the 20lb price - ANSWER->Balloon Price
Effects zones 5-8 can't exceed 1728cu ft max 108in in girth - ANSWER-
>Dimensional Price
How often is the Postal bulletin printed - ANSWER->Bi-weekly
Where do we find a list of lost or stolen MO (money orders) -
ANSWER>Postal Bulletin and POS
, Postal Service___________ are available online and provide guidance
on regulations for domestic/international/administrative/personnel
fields support? - ANSWER->Directives
Priority Mail is delivered in - ANSWER->2-3 days
any mailable item that weighs less than 13 oz - ANSWER->First Class
Global Express Guarantee (GXG) is shipped in - ANSWER->1-3 days
No mail piece can weigh more than except standard post -
ANSWER>70lbs
EDDM - ANSWER->Every Door Direct Mail
Express mail is delivered in - ANSWER->1-2 days
what surcharge applies to items/parcels over 108 but no more than
130in - ANSWER->oversize /parcel post
PS Form 3816 - ANSWER->COD
PS Form 3816-AS - ANSWER->More than 3 COD articles are mailed at
one time
Parcel Post and zones 5-8 larger than 1 cubic foot use - ANSWER-
>Dimensional Pricing
