Green Coconut Carbon Filters are the carbon block pre-filter that will reduce chlorine, organic chemicals, mercury, lead, PBCs, sulfur and heavy metals.

BIGboy Filter is 20 in x 4.5 in.  Stealth-RO/s,allBoy filter is 10 in x 2.5 in. TALLBoy filter is 20 in x 2.75 in.