Product review (3 stars): so the quality is just like the original
This is an OEM part, so the quality is just like the original.  It is shipped in a large, lightweight box so that the plastic was not folded. The only reason we ordered this part was the small, thin flap that overlaps the door was torn after just 2 year's use.  If that is why you are going to order this part, I would say don't bother!  The seal still works.  Just tear off that useless flimsy flap on the seal.
REPLACING: The existing seal is pretty easy to remove from the door.  Just pull firmly and carefully.  Getting the new seal in place is a bit trickier. You'll want something to push the seal into its receiving slot.  A wooden spatula or other thin, non-scratching tool should work.