Trident™ Filtration Pool King® brand CF Series vertical cartridge filters set a new standard in cartridge filtration. Designed with the user in mind, these high quality cartridge filters make pool filtration simple and efficient. Unlike sand and DE filters, these filters require no waste water connection, which greatly simplifies installation and saves water. Top quality Reemay® polyester cartridges are standard throughout the line. The small footprint of the CF Series makes these filters ideal for equipment locations with limited space. And best of all, the Pool King® CF Series filters are from TridentTM Filtration, a name renowned for quality and value in swimming pool filtration. The Trident CF200 is suitable for a smaller in groud pool.