during the washing cycle in the manner of a muffler to prevent excess noise from escaping the housing 15 during the washing cycle even in the absence of a door covering the vents 22 and 26 during the washing cycle it is believed that the corrugations further provide for improved water condensation both in terms of the increased area the heat conduction of the thinwall plastic material and the turbulence provided by the corrugated surface referring now to fig5 the tubes 32 and 34 pass from respective vents 22 and 26 to the blower assembly 36 and mixing chamber 37 as shown in fig1 positioned beneath the housing 15 the blower assembly 36 includes a blower 38 configured to provide air as indicated by arrow 40 through tube 32 and out of vent 22 and to draw air as indicated by arrow 42 from vent 26 into the mixing chamber 37 to exit an exhaust slot 44 in the mixing chamber 37 positioned beneath the door 18 to the front of the housing 15 as shown in fig1 the flow of air into the volume of the housing 15 from vent 22 may be substantially matched to the air drawn from the volume through vent 26 to prevent excess pressure buildup in the volume of the housing 15 such as may promote leakage of water out of the door seals referring.