The K9000 dog wash machine comes in three models: Standard, Lite and Compact. The Standard is recommended for an unstaffed area where more security is required e.g. Car Wash, unstaffed Dog Wash Store, Municipality. The Lite version works well in a staffed area where there is no risk of vandalism e.g. Pet business or Shopping Mall and the Compact which has a smaller footprint and less features than the other two, is suitable if you are looking for an economical option for small and medium sized dogs e.g. Condo, Residential or Small Business.