Model 288 gravity candles are suitable for all Australis Gravity Water Purifiers, Southern Cross, Coolaway, Stefani (not terracotta), WaterCo, Monbulk Pottery, Durand Water Filters, stoneware, Vitali, Hi-tech, HydROtwist, Bendigo Pottery Water Filter Purifiers,TruWater Filters, I Love Water and most other gravity fed water purifiers.Dimensions: Exposed ceramic area measurements: 57mm wide X 90mm HeightDrain pipe width : 11mmThread length : 35mmMaterial : Porous ceramic and activated carbonColor: Cream/ Off White Australis Ceramic Water Filter Candle filter down to 1 micron porosity, which allows it to filter out giardia and cryptosporidium. They also remove chlorine, chemicals, metals, sediment, bad taste and odours. However the filters do leave essential minerals including Calcium, Potassium and Magnesium to keep you healthy.