Description 1 Inch Inline Screened Overflow Fitting Inline Screened Overflow Fittings with Stainless Steel Mesh (insect & Rodent Screen) Made from PP – push fit Inline Overflows suitable for 1″ Pipe supplied with stainless steel mesh screened to prevent ingress from insects and debris. These easy to fit inline overflows fitting simply connects into the overflow pipework from the tank, ensure your system is up to standard with these Screened fittings.