I believe you are referring to bars that often rest on TOP of the slide when it is pulled in. These are designed to prevent the slide from moving outward when you are driving. The bars can be very simple--essentially curtain rods that extend between the wall of your RV and the ridge that surrounds the slide. Our new DP didn't come with these, but our last gas Class A did--but they weren't installed and we never used them. Lots of folks forget that they are installed and damage their rig when putting the slides out, so be sure that you remove yours if they are installed, or verify that they weren't installed in the first place.
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2013 Fleetwood Discovery 40G, Cummins ISL,Freightliner Chassis, Allison 3000.
2017 Ford F150 Lariat toad w/
Blue Ox Aventa tow bar and M&G Braking System
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