The McAlpine W21 Tank Overflow is a plumbing fitting designed for use with water tanks to provide a reliable overflow solution. It features a 70mm flange and a 3.5" tail with an unslotted waste design, without an overflow grid. The W21 Tank Overflow is constructed from high-quality materials and meets all relevant plumbing standards, ensuring reliable performance and durability. It is suitable for use in domestic and commercial applications. The 70mm flange of the McAlpine W21 Tank Overflow provides a secure and leak-free connection to the water tank, while the 3.5" tail is suitable for most waste pipes, allowing for efficient water drainage. The unslotted waste design of the fitting does not include an overflow grid, making it suitable for applications where an overflow grid is not required. Overall, the McAlpine W21 Tank Overflow is a reliable and efficient plumbing fitting that provides a safe and secure overflow solution for water tanks. Its high-quality construction, 70mm flange, 3.5" tail, and unslotted waste design make it easy to install and maintain, and ensure reliable performance and durability. It is a valuable addition to any plumbing toolkit. Available in 1.25" and 1.5" sizes Available in 2 tail lengths, 3.5" tail and 1.5" tail. | McAlpine W21 Tank Overflow; 70mm Flange x 3.5" Tail Unslotted Waste without in White