Product review (5 stars): Excellent....do not trim to fit.
Please Do Not trim away foam to fit as others have suggested, this is incorrect and will lead to problems. Push from fridge side with a purpose and assist retaining clips through from freezer side, it is tricky and you do have to push and rock diffuser to get clips to latch on freezer side. This is intentional so that it seals 100%. Item fit and function is perfect and it is OEM part. Great seller easy fix for stuck diffuser (usually burned out from icing by diffuser door caused by............poor sealing between fridge and freezer!