Cersanit Delfi duroplast slow fall (K98-0191) Board made of duroplast, which is a durable material that does not change color. It is supplemented with antimicrobial silver ions and thus ensures the highest level of hygiene. It has a free fall mechanism that allows the board to fall automatically and silently. The easy-to-bend system makes it easy to clean both the board and the bowl. In addition, metal hinges must be attached to the board. Light, elevated board shapes ensure a comfortable body position while sitting for the most comfortable use.