aluminum sided trailers cost less than fiberglass sided trailers, so the stock ones will be aluminum-sided.
if a trailer has aluminum siding, it's considered entry-level.
also, all the aluminum-sided trailers i know of are of wood construction, whereas all the fiberglass ones i know of, have aluminum construction.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC