This 4-1 boiling water tap comes complete with everything you need for a simple install. The tap delivers domestic hot and cold, filtered drinking water and filtered boiling water all from a single tap. It fits a standard size tap hole for any sink or worktop. The features make it great to have in your home and hold 2.4ltr of boiling water. It is fully approved and comes with complete instructions making installation a simple affair for any competent plumber. An internal thermostat keeps the temperature of the water at the correct level when heating. Supplied with a water filter to give filtered drinking water and limescale protection for the heater.