IPW Industries Inc. Compatible Replacement PC600-R Bulk Water Filter Refill Catalytic Carbon Charcoal Replacement Media for PC600 Whole House Drinking Water Filter - Removes Chloramines w/FunnelThe IPW Industries Inc. PC600 R bulk catalytic carbon media refill is engineered to remove chloramines, hydrogen sulfide, and volatile organic compounds from whole house water systems for up to 5 years or 600,000 gallons. This surface modified activated carbon delivers superior performance over conventional carbons through enhanced catalytic activity, without caustic chemical impregnates that reduce capacity or increase fire risk. SPECIFICATIONS PC600