All our filters are certified to meet NSF/ANSI Standard by IAPMO

Replacement For
Water Sentinel WSW-4 Compatible Refrigerator Water Filter.
Choose Your Perfect Filter

Water Sentinel WSW-4 Compatible VOC Refrigerator Water Filter
Model: SGF-W31-1PK
$22.40 USD/Filter
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Water Sentinel WSW-4 Compatible Pharmaceuticals Refrigerator Water Filter
Model: SGF-W31 Rx-1Pack
$25.76 USD/Filter
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