When I opened the box I was surprised I didn't see the instructions. First of all, very detailed instructions for assembling the filter were included. Regardless, all the various units were well marked. When I installed the new filter that sits on top of the reverse osmosis membrane, I found that the old one had a tee on the right end and the new one didn't. To a hardware store. Later there was a $6.00 tea and I was able to complete the installation. The rest went smoothly. When assembling, I found in the box both the necessary assembly and detailed instructions. Most of this is my fault, but it would be helpful if ISpring had packaged the filters better so no instructions were missed. Maybe they could put it or a note on top of one of the filter packs. A rating would give 5 stars.
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