my bet is -
1) PLASTIC is CHEAP
2) Plastic is LIGHT
3) Plastic allows for expansion & shrink-age
4) FOOD GRADE plastic is less prone to corrosion
__________________
Don R.
'04 Haulmark (M42386) 42', 2 slide, 10kw - Pictures
'04 F350 CrewCab Longbed 4x4, 50g aux tank & gear vendors dbl over
|