The Separett Privy Kits convert your existing outhouse or latrine to a urine diverting system. The 501 is a snazzy version which includes a folding toilet seat! The reduction of urine from solids greatly reduces the odor and decomposition periods. The units installs below the current latrine platform and the attached urine hose diverts fluids from the current holding location. The insulated seat and cover assure a good seal over the unit when not in use, and a seat that warms with your body contact. Warranty period is two years. Shipping is via FedEx Ground service so please no PO Box addresses. Also pls understand that if you have opted out of notifications from Amazon you will not receive shipping updates.