In-line exterior filter designed to be used between two hoses. Garden hose connectors for fast, easy hook-up. The finest acid washed coconut shell carbon used with "bacteriostatic" KDF media, combine to address many of today's water problems. Contaminants addressed include bacteria, heavy metals, hydrogen sulfide, lime/scale, chlorine, VOC's, taste, and odor. Disposable filter is conveniently discarded after approximately a year's worth of use (under normal water conditions). Filters water for your entire coach.