Product review (2 stars): NOT a (safe) replacement for GE model MWF as claimed
This item does NOT replace GE model MDF properly.  I installed this filter cartridge and when it was removed by unscrewing it forcefully ejected from the carriage releasing a significant amount of pressure and water.  If you're not holding on tight it could easily damage the refrigerator shelf.  The GE brand screws in and out easily and does not create/release pressure.