CTO RO Water Filter 1.AP Quick Changed Filter Cartridge 2.The prodact are have liability insurance 3.10â?� Quick Change Filter Cartridge 4.Filter Media: Activated Carbon 5.Replaced every 6-9 months depends on water quality CTO RO Water Filter Model No.:AP CTO CTO RO Water Filter Type:CTO Carbon Block Filter Maximum Flow:1.2GPM Maximum Pressure:125PSI Maximum Temperature:50 degree C Replaced period:Every 6-9months,depends on water qulailty