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Hi DJ, thanks for your question and interest in Bosch dishwashers! One of the most notable differences between the 300 and 500 series is the additional AutoAir® drying feature included with the 500 Series models. This will automatically open the door at the end of the cycle to let moisture escape and fresh air in for drier dishes. Other differences include the silence rating: 300 Series – 46 dBA, 500 Series – 44 dBA, and the 300 Series models have a Standard 3rd Rack versus the Flexible 3rd rack in the 500 Series. The Standard 3rd Rack provides the perfect space for items such as flatware, large utensils, or measuring cups. With the Flexible 3rd Rack, expandable wings easily lower to accommodate more of your deeper items, while adjustable tines let you customize the rack’s loading space to fit awkward or bulky items. The door handle designs differ between these series as well. If you have additional questions, please connect with our customer care team at 1-800-944-2904 for real-time assistance. Thank you for considering Bosch!
Sorry, there was a problem. Please try again later.The auto air feature. This opens the washer to let out the steam improving the drying. The door can be left cracked open as well. On the 300 the seal was so good that dirty dishes left for more than a few hours would begin to smell.
Sorry, there was a problem. Please try again later.Decibel difirence
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