Aqua-Pro extruded carbon block cartridge filter, 20" x 4.5" to fit the 20" big blue/white whole house systems, cartridge is 10 microns and will treat chlorine, colour, taste and odour.
Pressure drop at 10 litres per minute flow rate is less than 2 psi and 5.5 psi at 20 litres per minute flow rate.
Alternatives to this carbon cartridge
Coconut Crabon Block 20"x 4.5" 5 Micron