5 micron sediment filter. This filter should be removed and washed several times per year and replaced when worn.
Big Blue 10' Pleated Sediment Filter, 5 micron
How to Change the Prefilter (Sediment Filter) in the PurHome X-5 Whole House Water Filter (01:50)
http://www.puriteam.com/products/PurHome-X-5-Whole-House-Water-Filter.html How to change the pre-filter, or sediment filter, in your PurHome X-5. Simple, easy to follow instructions for a quick and easy filter change.