Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: what is the micron level for this filter?
Document: I use this as a replacement for a cartridge whole house system. Change every 45 days. Good consistent item. it would be good if the had a smaller micron filter available. These are 25 m -- 15 would be good
It is exactly what it should be for a whole-house filter. Same as what you'd get at the local home-improvement store.
We have been using this type water filter system for over 2 years. It removes all the rust from our well water.
We are on a shallow well and this is part of our filtration system. Works well as part of a 2 part filter.
No issues at all. Shipped right away and I received it within a week. Not much to say about a filter.
This filter works fantastically. I only give it 4 out of 5 stars for the price. As often as these require replacement, it is too expensive.
The filter is the same one found in &#34;big box&#34; stores. It a genuine GE product. Very easy to install.
Please contact me. This filter was punctured/torn on the side. The packaging however showed no signs of damage.help. help.
Just got this in anticipation of replacing the original filter, especially since they need replacing every 3 months. Should be perfect.
The filter was the correct one for my whole house water filter. The price was better that I would have paid at a local hardware store.
Answer: 25 -- I tried a 15 and an 11 and the water flow was very restricted. the 25 works well and keeps water clear and clean