Shop our selection of Shipping Supplies on the USPS.com Postal Store.
Sizes for postcards · Sizes for Letters · Sizes for parcels that weigh 13 ounces or less.
Large First-Class envelopes (flats) that exceed maximum dimensions, are rigid, non-rectangular, or not uniformly thick, are charged parcel prices. The USPS® ...
be processed on Postal Service equipment, your parcel is considered "machinable.
Letter Stamps. Standard-sized, rectangular envelopes. From $0.55. Square, Oversized, or Unusual Envelopes From $0.75 ...
Free Shipping Supplies. Need shipping supplies? Get free boxes, envelopes, and more. Shop Now ...
All large envelopes (flats) must be rectangular. “Rectangular” includes square- shaped pieces. Packages (Parcels). The single-piece 1-ounce rate for packages is ...
Priority Mail Express Padded Flat Rate Envelope 12-1/2" x 9-1/2" ...
When looking up the price for a parcel in the shape of a tube, first select
fold your large envelope to be letter-sized, or you could redesign your parcel to ...