The Sealand 510 Plus has a regular sized toilet seat and is 2" longer and 1" wider than the Sealand 2010. In some instances extra height is needed to allow the toilet to gravity feed to the composting unit. Where this is the case, the Sealand 511 Plus (large bowl) or the Sealand 2011 (small bowl), low profile models with a 10" seat height, can be mounted on a platform.
For Sun-Mar installations, we recommend the 510 Plus as the unit of choice as it has the size and appearance of a "regular" toilet. The 2010 is suitable if you have a very limited space in which to install the unit. Sealand toilets are available in either White or Bone. They come complete except for the required 3" four (4) bolt floor flange.