Vortech tank iron filter system fleck 7000 high flow 1 cu. ft. whole house system No more iron, sulfur, or manganese, no more stains or odors! 1 cu. ft. whole house system with high flow Fleck 7000 digital control head The Filox media Oxidizes iron up to 17 ppm, sulfur up to 10 ppm Chemical Free, no salt or additives needed, automatic backwashing 9" x 48" tank 10 year warranty, 7000 high flow control head with bypass valve, 5 year warranty