The Filbur FC-1971 is the correct compatible replacement for the following pool and spa filters:Purex/Pentair DM 90Purex DM 90Pentair Pool Products/Purex R173580Pentair Pool Products/Purex 175652
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61.93 Filbur FC-1971 Replacement For Purex 175652
61.93 Filbur FC-1971 Replacement for Unicel C-8402
134.25 Filbur FC-1974 Replacement For Purex DM 240
29.99 Filbur FC-2110 Replacement For Purex CF 25
93.95 Filbur FC-1970 Replacement For Purex 175689
93.95 Filbur FC-1970 Replacement For Purex R173579
105.80 Filbur FC-1972 Replacement For Purex 175653
105.80 Filbur FC-1972 Replacement For Purex R173581
102.99 Filbur FC-1973 Replacement For Purex Pentair...
134.25 Filbur FC-1974 Replacement For Purex 178572
59.99 Filbur FC-2130 Replacement For Purex 07-0658
44.99 Filbur FC-2140 Replacement For Purex 07-0654
69.95 Filbur FC-2150 Replacement For Purex 07-0657
81.95 Filbur FC-2160 Replacement For Purex 07-0656
74.99 Filbur FC-2190 Replacement For Purex 1722840
89.67 Filbur FC-2192 Replacement For Purex 1722841
39.95 Filbur FC-9250 Replacement For Purex 60 R...
21.95 Filbur FC-9220 Replacement For Purex 24 DE...
26.99 Filbur FC-9230 Replacement For Purex 36 Pool...
39.95 Filbur FC-9250 Replacement For Purex 60 DE...