On the '11 2720SL it isn't sheet metal but the aluminum skin. The battery box sits on it with no other support. The lip of the battery box is about an inch above the floor. Didn't see any problems with a group 24 back there over 1100 miles. Time will tell.
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Axis 24.1 E 450 chassis, 6 spd tranny. GVWR 14500# GVCWR 22000 # GW(scales) 12400 #
[SIGPIC][/SIGPIC]
mods: 2- 100 watt solar panels, on roof, 300 watts portable
“They who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety.” Benjamin Franklin
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