If you leave them out, there is more area to wash whenever it gets dirty, and also any time you move it in, be sure to check the top of the slide for leaves and twigs that can damage the seal. Also, when open, it's more area to heat and cool. Your choice!
/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