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The EcoWater ERO 375 Pre-/Post-Filter is a fully encapsulated combination sediment/carbon filter intended for use with the EcoWater ERO 375 Reverse Osmosis System.
This filter is recommended for replacement every 6 months as the pre-filter, and every 12 as the post-filter.
To replace, simply twist the old filter out clockwise, and the new one in counter-clockwise.