Replacement shower filter cartridge for the ProMax shower filter. Features 4 stage filtration process utilizing new RF water filter element technology. Helps protect your skin from unhealthy effects of contaminants that may be in your water. Independent lab test shows the ProMax shower filter helps reduce over 200 contaminants including VOC’s, heavy metals, pesticides, Chloramines, chlorine, fluoride, herbicides, pharmaceuticals and odor. Helps control scale, algae and bacteria. Best operated at 80 psi and 115º F. Up to 9 month filtration capacity.