Product review (5 stars): They fit fine, but they are not soft rubber seals like on a car and must be installed properly.
These are OEM parts and are identical to the originals.  They fit perfectly.  The problem for people unfamiliar with these type of seals is that the rubber is stiff and must be relaxed to make a good seal.  As other reviewers mention, this is easily done with heat, either by leaving them outside, using a heat gun or what I did, just use a hair dryer on high.

Simple instructions are to push the seal into the channel.  This is straightforward although it can be tricky at the corners.  Skip about 2 or 3 inches at a time then come back and push in the spaces between your first push.  This insures that the seal is centered along the door and that you are not accidently stretching the seal toward the bottom of the door (if you are working down) which will leave the seal too long when you get to the bottom.

Once pushed in, it will be compressed and will not seal at all, unless you presoftened them with heat.  I didn't bother.  Then use your fingers and pull the face of the seal out, the back will stay in the channel until you pull pretty hard.  Pull out the face of the seal to fluff it up a bit.  This is where heat helps.  I used a hair dryer to soften it up.  Then shut the door, and you will find many spots not sealing.  Use your fingers to push the magnetic surface to the fridge body.  Once it looks like it is sticking, use the hair dryer and slowly work around the seal softening it up.  It will take the permanent shape and flatten out against the fridge body.  Sides, top, bottom, between the doors and after a few minutes it will seal.

Open the freezer and check the bottom of the door seals too, if you do these steps, they will seal.  You can use a flashlight aimed at the door edges to double check the seal as you will not really feel cold air flying out or anything if it doesn't seal.

Take your time, it isn't car door weatherstrip, these take some finesse to get installed but work great.