This replacement filter set for the Pallas 300EF Reverse Osmosis (RO) system is comprised of the following filters:

1x    10" Pallas PP Sediment Filter Cartridge 5µ
1x    10" GRANULAR ACTIVATED CARBON B NSF
1x    10” BLOCK CARBON FILTER CTO B
1x    12" Pallas In-line HND Post Carbon Coconut

Optional (select above if required)
The Membrane usually does not require replacing as often as the above filters. 
1x    Pallas 3012 - 300 GPD membrane