3M Aqua-Pure 3MROP411 Sediment Water Pre-Filter Cartridge, for 3M401 and 3M501 Reverse Osmosis System

The 3MROP411-20A 3M Under Sink Reverse Osmosis Replacement Water Filter Cartridge is a pre-filter sediment cartridge. This filter features a slim profile design that allows for minimal space requirements and allows for more space beneath your sink. Easy operation and installation mean that replacing this filter and maintaining your system is a breeze. Quick change cartridge design means no hassle with tools and other appliances. The 3MROP411 is a replacement cartridge for the 3MRO401 and 501 reverse osmosis systems