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Give it purpose - fill it with water filters, air filters, refrigerator filters, and more.
The OmniFilter OB1 Whole House Water Filter Housing is designed for versatility so you can customize your filtration needs. The OB1 Series A filter housing does not include a water filter, but it will accept these OmniFilter filter cartridges: The OB1 housing accepts the Omnifilter RS2, RS3, RS4, RS7, RS12, RS14 or the T01 filters.
This filter installs anywhere in your home where filtration is needed and includes Omnifilter OW40 the wrench, which fits this newer OB1 Series A housing but not the previous OB1.
Omni Filter OB1 Water Filter Housing Product Specifications