Here's one place where you can buy them: http://www.tubesrus.com/packaging_materials/paper-tubes/heavy-duty-mailing-tubes/default.html. They take custom orders.
Bulk mailing tubes can easily be purchased online at United States Postal Service or at UPS or FEDEX or even in person at the United States Postal Service.
There are a multitude of places to order mailing tubes. You should be able to find one in any fedex or other shipping store, but you can also buy them online at http://www.uline.com/cls_15/Tubes , http://www.yazoomills.com/mailing-tubes.aspx?utm_source=google&utm_medium=cpc&utm_term=mailing+tubes&utm_campaign=Yazoo+Mills+Tubes-+Strategic+Keywords&gclid=CI780vOAoKACFSJ25QodW1K7ag , or http://www.staples.com/Mailing-Tubes-Mailers-and-Mailing-Tubes/cat_CL141868 .
One can purchase cardboard mailing tubes at many local office supply stores, large retailers such as Wal-Mart, or at a local postal or shipping store.
www.gemplers.com/tubes. They have a complete line of tubes.
You can try online retail sites such as Amazon and eBay. These websites also sell shipping tubes: http://www.officemax.com/office-supplies/shipping-mailing-supplies/mailers-tubes, http://www.officedepot.com/a/browse/mailing-tubes/N=5+530025/ and http://mailingtubesonline.com/.
Mailing tubes are available at the post office and in office supply stores or departments. Many shops that sell posters or other larger paper goods also have them, and you can also try Fed Ex and UPS stores. You can find mailing tubes at most office supply stores, such as Office Depot or Staples. You can also find some online at www.uline.com, which sells a variety of mailing products.
You can pick up mailing tubes for posters from your local post office.
The easiest place to find mailing tubes would be your local post office. You can also purchase that at your local staples or business depot locations.
Mailing tubes are available in bulk sale at various large chain office supply stores like staples or office Max. You can also seek online retailers like Amazon to look for smaller independent stores that sell them.
You can find green slime bike tubes for purchase at most bike shops or online retailers that sell bike accessories.
Mailing tubes are tubes that one can put mail in. Generally, it is best for shipping things that are long, or tube shaped. They can be found at any post office.
Maximum length for a mailing tube is 34 inches for the standard rate for Priority Mail. Larger mailing tubes may require additional postage. Call 1.800.ASK.USPS to inquire about tubes that exceed 34 inches.