About This Powerful 2 Stage Whole House Water Purification System with 3/4" port Connection: 3/4″ thread. Working pressure: 20 to 80 psi. Working temperature: 100 ~ 40 deg. F (37 ~ 4 deg. C). Flow Rate / GPM 1 – 8 GPM, for 3/4″ In / Out Whole House filter system uses standard 10"x2.5" cartridges, comes with 1 Year filter set 1st Stage: Quick-Connect 5 micron sediment filter. Dust, dirt, silt, sand, rust, and scale particles are trapped here in a filter which also extends the life of the syste1st Stage: Quick-Connect 5-micron sediment filter. Dust, dirt, silt, sand, rust and scale particles are trapped here in a filter which also extends the life of the system 2nd Stage: Premium 5 Micron High Dirt Capacity CTO Block Filter (10"x2.5") Overview Brand : Reverse Osmosis Revolution Special Feature : Chlorine Reduction, Multi Stage Filtrartion Product Dimensions : 17"L x 5"W x 15"H Material : Polypropylene Capacity : 7 Gallons Included Components : Filter Package Information : Cartridges Installation Type : Whole House Purification Method : Reverse Osmosis, Sedimentation Model Name : ROR-2S2Y