Burlington are totally committed to maintaining the authenticity of each piece of 'Yesterdays Designs' whilst using the most modern methods of manufacture and materials available today. All Burlington WC's exceed the British BS 3402-1969 and European standards EN 31-1999 and each is fired to 1,200 degrees centigrade for a minimum of seventeen hours. Each Burlington WC is carefully and securely packed in lined 2 ply corrugated boxes so as to ensure a perfect product is delivered to your home and is guaranteed for 25 years. All Burlington WC's have Nanoglaze in the bowl. Nanoglaze is a coating that reduces microscopic pores in the ceramic surface ? making the ceramic smoother ? as a result less waste ?sticks? to the ceramic making cleaning far easier. All Burlington WC's have box (not open) rims. Whilst this is more difficult to manufacture ? it does ensure that the water from the flush is correctly spread on the pan internal ? so that you don?t have any ?dry areas? that don?t get cleaned with each flush.All Burlington WC's are fitted with water saving dual flush fittings ? 2? or 4? litres.All Burlington cistern fittings are WRAS (Water Regulations Advisory Scheme) approved.