Photo 1 of PACETAP Spa Filter Replacement for Pleatco PWW50P3, Unicel 6CH-940, Filbur FC-0359, Waterways 817-0050, 2 Pack 1 1/2" Coarse Thread Spa Hot Tub Filter for Waterway Vita Aber, Viking (Premium Blue)

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Photo 1 of PACETAP Spa Filter Replacement for Pleatco PWW50P3, Unicel 6CH-940, Filbur FC-0359, Waterways 817-0050, 2 Pack 1 1/2" Coarse Thread Spa Hot Tub Filter for Waterway Vita Aber, Viking (Premium Blue)Photo 2 of PACETAP Spa Filter Replacement for Pleatco PWW50P3, Unicel 6CH-940, Filbur FC-0359, Waterways 817-0050, 2 Pack 1 1/2" Coarse Thread Spa Hot Tub Filter for Waterway Vita Aber, Viking (Premium Blue)