The McAlpine R45E Complete Screened Tank Overflow Connector with quick release Filter - Extended model is a plumbing component designed for use in overflow pipes connected to water storage tanks. The R45E model features a screened tank overflow connector, which helps prevent debris and other particles from entering the water storage tank. The quick-release filter design allows for easy cleaning and maintenance of the unit. The extended model of the R45E is likely designed to provide additional length to the overflow connector, allowing for easier installation in situations where the tank and overflow pipe are located further apart. This extended length can help ensure a secure and leak-free connection between the tank and the overflow pipe. Overall, the McAlpine R45E Complete Screened Tank Overflow Connector with quick release Filter - Extended model is a high-quality plumbing component that can help improve the safety and efficiency of water storage systems. ・ Available in ¾", 1¼" and 1½" sizes ・ WRAS approved