All in all, this is a good quality product.
But, I feel that the mass backing, when added to the carpet, needs to be molded onto the underside in a sense where the carpet molds onto the “original” floorboard pattern. I had to do some cutting and modifying to match up the replacement piece to the old/used carpet.
Realize the mass backing is truly thicker when added to the finished carpet as opposed to factory standards carpeting. And...it’s worth it!
Thanks