Sizes

Postal Boxes come in several different sizes. Keep in mind how much mail you think you might receive, and whether that includes packages or Lettermail. This will help you decide on the size that’s right for your needs. If you’re a business customer, you should factor in potential growth to make sure the Postal Box size will meet your future needs.

If the current Postal Box can't accommodate the typical volume of mail received, the post office may ask you to transition to a more appropriate Postal Box size. An increase in the Convenience Postal Box rental price may apply. In certain situations, we may provide free Mail Forwarding service when you transition to the next Postal Box size.

Postal Box sizes

Category Box size Ideal for
A Small or General Delivery
90 mm x 130 mm x 360 mm		 Letter envelopes
B Medium
140 mm x 130 mm x 360 mm		 Letter, legal, and large brown envelopes
C Large
290 mm x 130 mm x 360 mm		 Virtually all size letters, envelopes, and various sized parcels
D X-large
290 mm x 270 mm x 360 mm		 Virtually all size letters, envelopes, and various sized parcels
E XX-large
290 mm x 280 mm x 360 mm		 Virtually all size letters, envelopes, and various sized parcels
F Container/bag service Customers who receive large volumes of mail
Category A Box size Small or General Delivery
90 mm x 130 mm x 360 mm
Ideal for Letter envelopes
Category B Box size Medium
140 mm x 130 mm x 360 mm
Ideal for Letter, legal, and large brown envelopes
Category C Box size Large
290 mm x 130 mm x 360 mm
Ideal for Virtually all size letters, envelopes, and various sized parcels
Category D Box size X-large
290 mm x 270 mm x 360 mm
Ideal for Virtually all size letters, envelopes, and various sized parcels
Category E Box size XX-large
290 mm x 280 mm x 360 mm
Ideal size Virtually all size letters, envelopes, and various sized parcels
Category F Box size Container/bag service
Ideal for Customers who receive large volumes of mail

Please note:

  • Bag or container service is a form of Postal Box service used to accommodate customers with large volumes of mail. We assign each bag service a unique postal code, so the mail arrives at the destination post office pre-sorted and ready for pickup each business day. We offer bag services under the same terms and conditions as Convenience Postal Boxes, except different fees apply. See the Pricing section for details.
  • All Postal Box sizes may not be available at every post office location. Please check with the post office to make sure the type of box you need is available.