Review on C2G/Cables to Go 16329 Wiremold Corduct Overfloor Cord Protector, Brown (5 Feet): Organize and Protect Your Cables with this Wiremold Cord Protector by Ryan Lawson

You need to fold it back to keep it flat. I followed one of the other reviews by putting it back in the box after folding it back and a day later I laid it flat and attached weights to the ends when mine flared up. That helped. I use mine to hide an LMR-400UF coax cable for my ham radio. This allows the bedroom door to be opened and closed with minimal effort. Let's just say you won't slam the door with carpet on the floor. The friction at the bottom of your door is minimal.