Product review (5 stars): It works great. Why pay more?
This is simple economics. The filter is an exact replica of the ones that GE wanted to generously sell to you for an obscene markup. I got two for half of what GE wanted to charge me for one.
It plugs into the filter slot with no problems whatsoever. Follow the directions and run the water for about 5-minutes and voila. (Yes, the directions say that. I imagine that the factory filters say the same thing.)