McAlpine TUN-4 Top Inlet Tundish with a 3/4" BSP inlet and a 19/23mm universal outlet. This one-piece tundish is designed for easy installation and maintenance, compatible with a range of waste pipes and fittings. Made from high-quality, durable materials resistant to corrosion and high temperatures. Suitable for use with water heater cylinders, geysers, heating boilers, or other pressurised tanks. Features include traps, WC connectors, shower and floor gullies, air admittance valves, roof flashings, and waste outlet fittings.