This deal includes all the filters you need for your 6 month filter change

One- 1 Micron Sediment 
One- 0.5 Micron 20000 Gallon Carbon Block
One- Medical Grade Color Changing DI Resin Complete Refill Bag

• Liquatec MCB10 Carbon Block Filter Contaminant Reduction:
• Micron Rating (Nominal): 0.5 Micron
• Chlorine Capacity: 20,000 @ 1 GPM
• NSF Rating: Tested and Certified by NSF International to ANSI/NSF Standard 42 for material requirements only.
• Flow Rate: 1 to 1.5 GPM
• Dimensions: 2.5”x 9 7/8”
• Initial Pressure Change @ Flow: 4.0 psid @ 0.5 GPM
• Operating Temperature: 40°F – 180°F
• Carbon: Coconut Shell
• End Caps: Polypropylene
• Outer Wrap: Polypropylene
• Inner Wrap: Polypropylene
• Netting: Polypropylene
• Gaskets: Neoprene
• Filter Media: Polypropylene