Package Content This is the complete system already assembled and comes with the clear instructions and all filters. 1 x 5-Stage Reverse Osmosis RO+DI System with 1 x 10" 5 micron Polypropylene sediment Pre-Filter with housing with 2 x 10" 5 micron coconut carbon block Pre-Filter with housing with 1 x 10" Premiun Quality Housing for Reverse Osmosis Membrane with 1 x 10" 0 PPM De-Ionized DI Post-Filter with 1 x Auto Shut Off Valve with 1 x Flow Restrictor with 1 x Built in check valve 1 x sealed TFC (made in USA) RO Membrane 3 x 60" Food Grade Tubing 1 x Filter Housing Wrench 1 x Saddle Clamp Drain Valve 1 x Feed Water Device