As far as I know, any aluminum sided trailer, like Wildwood, is wood framed. Known as "stick and tin".
As far as Palomino, depends on which of their brands you're asking about.
Filon sided should be aluminum frame.
Aluminum siding should be wood frame.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC