Step on the foot pedal half way to add water and fully activate to have a full-bowl coverage flush.Please confirm your current flange has 6 11/16' bolt spacing with under 1/2' protrusion height above 20' taller seating height offers a comfortable feeling that resembles a real household toilet Efficient and disperse flushing coverage to clean the bowl thoroughly and reduce water consumption HDPE material with strong construction for ensuring sturdiness and stability, can bear up to 441 Lbs Comfortable and easy to operate, ideal for RVs, camper cars, trailers and other mobile home campers