Photo 1 of Purewell 8-Stage PF-3&FL-2 Purification Elements Set, Replacement Filters for ProOne® and Berkey® Filters, ProOne® Big+ or Berkey® Big+ Water Filter System and Purewell System (4 Pack, K Series)

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Photo 1 of Purewell 8-Stage PF-3&FL-2 Purification Elements Set, Replacement Filters for ProOne® and Berkey® Filters, ProOne® Big+ or Berkey® Big+ Water Filter System and Purewell System (4 Pack, K Series)Photo 2 of Purewell 8-Stage PF-3&FL-2 Purification Elements Set, Replacement Filters for ProOne® and Berkey® Filters, ProOne® Big+ or Berkey® Big+ Water Filter System and Purewell System (4 Pack, K Series)