This slim design toilet seat is a great replacement seat for many D shaped toilet pans.It has quick release technology in the seat hinges which means that cleaning is much easier.This slow closing toilet seat means no loud bangs in the night and no trapped fingers.It is made of tough thermoset material for a seat that lasts.The adjustable hinge on this toilet seat will allow the seat to be moved to fit pans where the distance from the centre of the hinge holes to the front of the wc pan is 404mm to 428mm and 444mm to 468mm