Only one way to find out if it'll fit: measure
Tank footprint is about 20" x 20". The SeaLand Marine Traveler is an excellent system...uses pressurized flush water, and has no moving parts that require maintenance. Also a no-brainer for children and landlubber guests to use. Tank holds 9 gallons, but because flush water volume is so low, that's about the same number of flushes as a 15-18 gallon tank connected to a manual marine toilet.