"we have had this product installed for 3 months now and the bottom has swollen and blown open. The manufacturer said it is because it is in a moist atmosphere and got wet. What type of atmosphere do you expect to get in a bathroom. Avoid at all costs as they will not honour their 2 year guarantee - not worth the paper it is written on. Chipboard with iron on edging and just lets the moisture in. If it was water then I'm not sure how it runs uphill. The same has happened to the base unit as well. Don't waste your money."