Features of the Alca Washbasin trap DN32 with nut 5/4 " (A430): Connection to drain pipe Ø32 mm Material: polypropylene Alcaplast was founded in 1998 in the Czech Republic. It currently has seven foreign subsidiaries and exports to over 40 countries worldwide. Alcaplast is the largest manufacturer of sanitary ware in Central and Eastern Europe and produces a wide range of over 580 items - valves, siphons, modules, grates, drains, toilet seats and other products. Quality and design are the two main pillars of the company.