Reversible baseboard for covering at least a flooring border

A profile rail system for covering at least one covering edge comprising at least one base rail comprising a first ferromagnetic part, at least one cover rail comprising a second ferromagnetic part, said at least one cover rail being spaced from said at least one base rail, and magnetic means for mounting said at least one cover rail on said at least one base rail in a manner permitting adjustment of the distance therebetween, said magnetic mounting means comprising a permanent magnet extending between said at least one cover rail and said at least one base rail, oriented at an angle of less than 90 degrees relative to said at least one base rail and to said at least one cover rail, said magnet having first and second magnetic poles, one of said magnetic poles being situated proximate said first ferromagnetic part, said other of said magnetic poles being situated proximate said second ferromagnetic part, wherein said orientation angle of said permanent magnet changes as the distance between said at least one cover rail and said at least one base rail is adjusted.