Product review (5 stars): Supco WF285  water filter
Talked to Supco on this filter. Their NSF certification has been submitted and is pending approval. It meets all specs of OEM model.
It is made overseas at their facility not a third party. Supco is a big supplier of HVAC parts and Appliance parts. Most all of the servicemen in these industries use Supco products.  Many products are made by the OEM manufacturerer for them and repackaged.
I have been using this product for years and have never had a problem, unless saving a huger amount of money is now a problem.