Curtis Paper Coffee Filter UP-6 features a fluted design that prevents filter collapse in the brew cone, and optimal thickness for the perfect steeping time. It is made to be used with the Wilbur Curtis RU-225 single and RU-600 twin 6-gallon coffee urns.
The Curtis Coffee Filter UP-6 is designed to work with Curtis coffee brewers that use the WC-3303 steel brew cones. You can find the “WC” number can be found on the brew cone itself.
The Curtis Coffee Filter is designed to work in the Curtis RU-225 Single 6-gallon Coffee Urn and the Curtis RU-600 Twin 6-gallon Coffee Urn.
If there are questions, it is best to call Wilbur Curtis at 800-421-6150 to find out which paper filter is the best for your brewer.