Quote Originally Posted by genphreak View Post
Defo the sort of thing put in by the carpet layers. I'd bet it retains the carpet somehow (beware it may have teeth protruding from below, but it probably lifts off the carpet somehow. they probably cut the existing threshold out and cut the frame to slide it in, or the door was done with it like that. Look very carefully under the front lip for screws/fasteners. Good luck, ugh!
I think its the black strip line - epoxy that separtes the two halves. Should be broken. Didnt get to it yet.