Mailing tube question

[timeprimesave]

Has anyone ever sent a package through a mailing tube? Do I have to select irregular package or can i choose box or rigid? Its my first time sending an item in a tube so I want to do it right.  If select box or rigid its way cheaper however I saw online since its a tube I would have to also select irregular package but some sites say I can leave it at box or rigid, so its pretty confusing. 

[simba6]

Choose box and enter it's size and weight as it's a rigid package and is not irregular in shape.  Be sure the ends are well secured.  They have been known to come off in transit.

[mtgraves7984]

A tube isn't an 'irregular' size. You'll mention the width and height of your tube, then the length. Good luck.

[repair1techj]

USPS website nonrectangular you need the girth measurement. UPS or Fedex rates might be better than USPS.