Shallow-depth dishwashers can be purchased at a range of local department stores, as well as through online retailers such as Best Buy, as of 2015. Shallow-depth dishwashers are those that are less than 24 inches wide.
Best Buy stocks 17 dishwashers that are just 18 inches wide, with several of those models having a depth of just 22 inches, nearly 2 inches less than full-size options. If this is still too deep, a counter-top dishwasher is a viable alternative. The ENERGY STAR certified Danby tabletop portable dishwasher has a depth of just 19.69 inches and is only 21.63 inches wide.