LF: heavy duty hallway carpet 6' or longer for office

[royaljelly]

I'm looking for those long (preferably 6' and longer) heavy duty carpet that I can lay down for a hallway to absorb snow so people won't slip and fall in my office. I've seen some that have rubber on the bottom, and carpet on top.

I can't seem to find any stores that sell them long enough, be it walmart, cdn tire, etc.