They are suppose to raise up about an inch- the slide out room rides on runners that drop down a ramp at the end of their travel, to allow the floor transition to be as flat as possible. The room is either pushed or dragged across the existing floor surface, and can be adjusted side to side, or tilt in or out; but NOT up! Hope this helps! Randy
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/SIGPIC]'08 V-lite Flagstaff 30WRLS
'06 Ram 1500 QC hemi Reese dual cam sway control,
K&N series 77 intake, Hellwig helper spgs. LT tires,
Flowmaster "true duals", 380 h.p., Bilstein shocks
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