These are the two filters that together with the reverse osmosis membrane (the real heart of the system) make up GE's reverse osmosis system. Filters come with detailed written instructions, which isn't always the case these days, but is always welcome. Installation takes time and effort, and you need a special wrench and a firm grip to complete the job. I repeat: you must be careful. I haven't had any problems, but I do have some mechanical ability. I know quite a few people who honestly have trouble swapping out lightbulbs. This replacement can be daunting if you are in this category. But if so, take heart! Do not give yourself up. There is always something to learn, and practicing simple mechanical things is a valuable learning experience, just as good for the brain as "intellectual" activity - that's what I say.
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