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.
Dan-Retired California Firefighter/EMT
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package