The way I see it is, if you support your slide-out from the ground and your jacks settle or the ground gets soft from rain and give way a little it would put your slide-out in an awful bind.
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Steve Brown https://SteveBrownMinistries.com
2014 Voltage 3950 w/Epic Pkg
2012 Chevy Crew Cab LTZ 4x4 DRW 3500hd Duramax