USPS first class max thickness?

[tommy50607]

I want to ship a couple lightweight things, less than 10oz but 2-3 inches thick. One is a metal cup and another is a metal bowl.  Does USPS first class have a max thickness? I want to put it in a bubble mailer. What is the cheapest way to ship it? 

[emerald40]

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@tommy50607 wrote:

I want to ship a couple lightweight things, less than 10oz but 2-3 inches thick. One is a metal cup and another is a metal bowl.  Does USPS first class have a max thickness? I want to put it in a bubble mailer. What is the cheapest way to ship it? 

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To be eligible for mailing at the price for letters, a piece must be: Rectangular. At least 3-1/2 inches high x 5 inches long x 0.007 inch thick. No more than 6-1/8 inches high x 11-1/2 inches long x 1/4 inch thick.

[tommy50607]

That's for mailing at the price for letters. And I know I have received packages thicker than 1/4.

[tommy50607]

I want to send it as usps first class package/thick envelope.

[thatsallfolks]

1/4 inch is the MINIMUM for FC packages. I don’t know the maximum.

[variety_nook]

If you want to ship in a bubble mailer, No problem. No Max Thickness for a bubble mailer. If your item(s) will fit in them, you can ship them.

[duchess-at-speakeasy]

First Class Package Service does not have a "maximum thickness." (Well, it does, but a large box would be too heavy to meet weight requirements.) After all, you can mail an 8x8x8 box via FCPS as long as it weighs no more than 13 oz. (retail) or 15.999 oz. (online). But . . . please do not mail a metal cup or bowl in a bubble mailer! It will be crushed. Squished. Mangled. Bent. Dented. Flattened. Damaged beyond repair. Drop a 40 lb. box on your bubble mailer and metal item. See what happens? Use a corrugated box. Buffer the product with 2 inches of packing chips -- which weigh a lot less than crumpled or twisted paper and provide structural integrity not offered by bubble wrap. If your package is too heavy for FCPS, use Priority Mail, which includes up to $50 indemnity. For FCPS, you pay extra for insurance. Either way, inadequate packaging means insurance claim denied. ~~C~~

[vw]

As far as I know there is NO size limit to a 1st class package. . .

[sam9876]

" Does USPS first class have a max thickness?"

No.

[muttlymob]

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@vw wrote:

As far as I know there is NO size limit to a 1st class package. . .

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The limit for First Class Parcels is 108 inches length plus girth.

[cad777864]

To keep this simple, i used to be in transport.  First class goes by weight.  Unless your over dim and you won't be.  If you package weighs under 15.9 ounces, your good to go. 

[muttlymob]

First class goes by weight.  Unless your over dim and you won't be.

Dimensional weight rate doesn't apply to USPS First Class Parcels.

[emerald40]

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@tommy50607 wrote:

I want to ship a couple lightweight things, less than 10oz but 2-3 inches thick. One is a metal cup and another is a metal bowl.  Does USPS first class have a max thickness? I want to put it in a bubble mailer. What is the cheapest way to ship it? 

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Large Envelopes (Flats)

• The single-piece 1-ounce rate for large envelopes (flats) is $0.80.
• The maximum size for large envelopes is 15" x 12" x 3/4" thick.
• The maximum weight for large envelopes is 13 ounces. A large envelope exceeding 13 ounces is classified as a Priority Mail item.
• When a First-Class Mail item exceeds any one of the maximum measurements of a large envelope, it is classified and priced as a package (parcel).
• When a flat-size piece of mail is a box or has contents that make the mailpiece rigid, it is classified and priced as a package.
• All large envelopes (flats) must be rectangular. “Rect­angular” includes square-shaped pieces.

[tommy50607]

Can I put it in a box any size as long as it is under 16 oz?

[fern*wood]

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@tommy50607 wrote:

Can I put it in a box any size as long as it is under 16 oz?

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Based on the fact that it has to be under 16 oz means the box won't ever be very large.  Yes, I ship 1st class in boxes daily.