(Package Of 2) 3M CUNO Aqua-Pure AP817-2 Whole House Water Filter. The item “(Package Of 2) 3M Aqua-Pure AP817-2 Whole House Water Filter” is in sale since Thursday, September 6, 2018. This item is in the category “Home & Garden\Home Improvement\Plumbing & Fixtures\Water Filtration Systems”. The seller is “buying-direct-corp” and is located in ON Canada. This item can be shipped worldwide.