Product review (3 stars): New filter not like the older ones
I was replacing an older Rusco 1" filter and this looks just like the one I have and the dimensions are all the same.  Only difference is the bottom of my filter is round and the bottom of this filter has four small tabs or feet (see attached photo).  With the new filter, I could not screw the filter holder all the way on because it was slightly too tall and it leaked.  I had to file down the four feet slightly so the filter sat a little lower in the holder and then I was able to assemble the unit with no leaks.  My filter assembly is only 10 years old so shame on Rusco for not ensuring their new filters are backwards compatible.  Filter is fine otherwise but this is just an indicator that the company has poor engineering or specifically designed this new filter to not be backwards compatible.  In either case, I will not be buying Rusco products in the future.