<p>A drum type washing machine (1001) includes a housing (41), a drum (83) accommodated in the housing (41), a motor (81) accommodated in the housing (41). The side plate (36) has plural dents (37) provided therein extending in a longitudinal direction extending horizontally. Widths of plural dents (37) in a vertical direction are larger than a width of an area between dents adjacent to each other out of the plural dents (37) in the vertical direction. The side plate (36) is rigid, accordingly preventing the drum type washing machine (1001) from vibrating even when the rotation speed of the drum (83) increases.</p>
