Size: 1"; Zeus Disc filter is very useful device to prevent passage of sand, debris & such particles to sanitary fixtures. Hence, it protects Damage of internal parts of taps, concealed & open flush tank, washing machine, flush cock, divert or ETC. Zeus Disc filter/water tank filter helps infiltration of debris & impurities up to 120 MICRON, which gets collected in the overhead tank. It’s easy to install & clean. it increase the life of R.O. System by preforming pre-filtration. Similarly it increases the life of sanitary fittings & Fixtures. As almost no part replacement required. So, it's free from external maintenance