Staining exterior wood door question

[csaagpDIESPAMDIE]

Should the top/bottom/sides get stained & polyurethaned also or should they be left alone for the wood to 'breathe'?

[roemax]

[Max]

wrote

You don't want the door to "breathe". It will expand and contract with changes in the humidity. Seal it all the way around.

Max

[csaagpDIESPAMDIE]

Thanks!

[nospambob]