I have a fantastic composting toilet by Biolet. Wonderful Swedish company that produces quality products. This one has a good capacity and is electric as well as can be done manually. It has been kept in very nice shape. The fan vents it and is fume free. It also has an automatic stirring arm that rotates when done. Wonderful for boats, cabins, cottage!suite, remote locations, anywhere where there's no septic. It comes with venting pipes, roof gasket, tool for manual mode, even 2 small brackets for keeping it secure. After 6 months, you can spread the contents of the tray around your garden if you want to. Very cool! Dimensions-32 1/2"d x 26"w x 26"h. Check out the new prices! This is a quality comping toilet. https://www.biolet.com/ $975 OBO Nature's Head, Saniflo, Separett, Envirolet, Sun Mar