What can I do about my coffee filter collapsing and causing an overflow?

When using a paper filter, there may be times that the filter will collapse and cause overflow. If the filter is collapsing in your coffee brewer, first make sure you are using the correct size and shape filter in the unit. Cone Filters: (Paper or Permanent)# 2 cone filter is for 4 cup coffeemaker and # 4 cone filter is for 8, 10, or 12 cup coffeemakers.