Slide-out skid or glide
HWH and Winnie, and others, have what is called a skid or glide or sometimes slide-out shoe. Polyethylene or sometimes hardwood, that mounts on the interior edge of the slide. Curved to ride up over the interior rug or tiles. I have also seen hard rug, like on the bottom of a boat trailer used for the same thing. A skid pad.
Jim and Valerie, 2005 Winnie Adventurer 37B, 2014 Subaru Forester Toad, hitches, brakes, anti-sways, autopilot, gourmet food on a Social Security budget.
"Wave as you go by."