This is a world first. A toilet that eliminates the tank and works completely without electricity, saving you space and the world resources. Thanks to our patented VACUUM V FLUSH that is integrated into the ceramic, Primus is a really the first of its kind – and it only uses 5l per flush. Primus also features a silent seat and our Easy Clean glaze that makes cleaning it a breeze. This toilet features a 305mm pit, but is also available with a 400mm pit (W330-0441-M1 for White/Silver, W330-0442-M1 for White/Champagne and W330-0443-M1 for White/Rose Gold).