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What is considered an oversized envelope?

Last Updated: 27th May, 2020

A Large Envelope is a rectangular mailpiecenothicker than 3/4 inch. Have four square corners (orfinishedcorners not exceeding a radius of 0.125 (1/8)inch.

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Thereof, what is the largest size envelope for a regular stamp?

To be eligible for mailing at the price for letters, apiecemust be:

  • Rectangular.
  • At least 3-1/2 inches high x 5 inches long x 0.007inchthick.
  • No more than 6-1/8 inches high x 11-1/2 inches long x 1/4inchthick.

One may also ask, are bubble mailers considered large envelopes? Thick Envelopes:Includesbubble-mailers and other large,paddedenvelopes and mailers and has the same sizerestrictionsas a flat. Since a Thick Envelope is under 1cubic foot, software does not add any USPS surchargesor ask forpackage dimensions.

Similarly one may ask, what is the difference between a large envelope and a package?

A package is a parcel (or box) less than 84incheswhen you add the length plus girth. Length is the longestside of apackage. A thick envelope is a largeenvelopeexceeding 3/4 inch thickness.

How many stamps should I put on a 9x12 envelope?

Forever Stamps are currently worth 50¢so,for instance, a two ounce flat 9x12 envelope wouldneed$1.21 in postage … or threeForeverstamps.

Related Question Answers

Leisy Meroni


Does 5x7 require extra postage?

Does a 5X7 Envelope RequireExtraPostage? A rectangular 5x7 envelope is the standardsizethat is used in the United States for mailing lettersandinvitations, so if your envelopes are within the weight range of1oz, then you will only need to pay $.47 for each onewithoutany additional charge.

Zayneb Funfert


What size of envelope requires extra postage?

According to, for an envelope tobeeligible for mailing at the price for letters, a piece mustbe:Rectangular. At least 3-1/2 inches high x 5 inches long x0.007inch thick. No more than 6-1/8 inches high x 11-1/2 incheslong x1/4 inch thick.

Piedrasantas Kunnemann


Can You Use Forever stamps on large envelopes?

You can use more than one Forever Stampifyou need to send a package or a letter that weighs morethanan ounce. So if you paid $0.49 and the rate rises to$0.50,you can put two Forever Stamps on a package toget$1.00 worth of postage. You can also useForeverStamps to send letters internationally.

Justas Vonderthann


How much is extra postage?

The First Class Mail Letter (1 oz.) rateforpostage purchased at the Post Office will increase byfivecents to $0.55 from $0.50. Each additional ounce for aFirstClass Mail letter will cost $0.15 (a decreasefrom$0.21).

Salifou Viscasillas


How much does it cost to mail a 9x12 envelope 2019?

First Class Mail Flats/Large Enveloperatesare not increasing in 2019, remaining at $1.00 (1oz.),with additional ounces costing $0.15. Postcard ratesarealso not increasing in 2019, remainingat$0.35.

Heorhiy Ermitoo


What size envelope is classed as large?

The maximum envelope size you can use forstandardpost is 240mm x 165mm. The largest standard envelopesize forstandard post would be a C5, with dimensions of229mm x162mm. The weight must be less than 100g when filles andsealed andthe depth/thickness must be less than 5mm.

Jandro Nitk


Does a 6x8 envelope require extra postage?

A 6” x 9” envelope weighing up to1ounce requires one $.50 first class rate stamp. Foreachadditional ounce, you'll have to pay $0.21. So, forweightbetween 1 and 2 ounces, it'll cost you $0.71.Envelopes thatexceed 3.5 ounces in weight or are thickerthan ¼ inch willbe charged the larger enveloperates.

Samael Buerkle


What size is classed as a large letter?

1st and 2nd Class prices
Format and max measurements Max Weight 1st Class
Letter 24 cm long 16.5cm wide 0.5cm thick 100g 70p
Large letters 35.3cm long 25cm wide 2.5cmthick 100g £1.06
250g £1.50
500g £1.97

Earlie Lelievre


What is a First Class Mail large envelope?

First Class Mail is the most popularandeconomical way to send standard postcards, letters,largeenvelopes, and small packages up to 15.99 ounces.Forlightweight packages, First Class Mail Package offersgreatcost savings compared to Priority Mail and ParcelSelectGround.

Quirino Koeler


Do large envelopes need more stamps?

The USPS considers any envelope bigger thanthissize to be a package, and will be subject to parcel prices. Tosendlarge envelopes, you do not need to visitthePost Office as long as you have postage stamps, access toapostage meter or can print postage onlinefroma company like

Alfonzo Scheurle


Is a poly mailer considered a large envelope?

-Using USPS, a poly mailer can either be apackageor large envelope depending on itsdimensions.

Fay Vonderweiden


How thick can a flat rate envelope be?

Flat Rate Envelopes are best suited fordocuments,but if you choose to send another type of item (up to 70pounds), itshould not reconstruct or expand the envelope inany way. Aslong as the envelope closes within the normalfolds, bulgeswill not matter. There is no maximumthickness forFlat Rate Envelopes.

Yukari Jurakovsky


How thick can a letter be?

To be eligible for mailing at the priceforletters, a piece must be: Rectangular. At least 3-1/2incheshigh x 5 inches long x 0.007 inch thick. No more than6-1/8inches high x 11-1/2 inches long x 1/4inchthick.

Virtudes Gribin


What is a perishable item in mail?

Keep in mind, the USPS defines perishable mailasbeing sent at your own risk. No matter where your itemfallsunder the 'perishable' category, its packaging mustmeet theoutlined requirements. The most common perishableitemsinclude food, flowers, plants and liveanimals.

Herica Eloi


How much does it cost to mail a bubble envelope?

The USPS used to charge light weight Priority MailandParcel Select packages with a girth between 84" and 108" aratebased on a 20lb weight. This is discontinued.

USPS Rate Changes 2019.
Letters 2018 Rates 2019 Rates
First-Class Mail Flat/Large Envelope - eachadditionalounce $0.21 $0.15
Postcard $0.35 $0.35
Flat Rate Envelopes

Sundus Stemp


What is considered regular mail?

Standard Mail. Standard Mailusuallyconsists of flyers, circulars, advertising, newsletters,bulletins,catalogs, or other printed pieces that are generallyidentical incontent. Standard mail must be less than 16ounces and mustmeet a minimum quantity of 200 pieces or 50 poundsofmail.

Johara Aznal


Does the post office have shipping bags?

The USPS provides free shipping boxesandenvelopes for Priority Mail and Global ExpressGuaranteedpackages.

Yifan Barambones


What is considered a large envelope USPS?

The Postal Service uses the word "flats" toreferto large envelopes, newsletters, and magazines. Thewordslarge envelopes and flats are used interchangeably.Whateveryou call them, flats must: Have one dimension that isgreater than6-1/8 inches high OR 11-½ inches long OR¼ inchthick.

Demetra Ervideira


How many sheets of paper is an ounce?

Generally, 4 standard 8.5"x11" pieces ofpaperplus one standard business size (#10) envelope are justshy of 1ounce (0.85 ounces withunprintedpaper).