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I just spoke with our UL engineer. If your drivers are on the UL Class P program we can use them without testing if they are comparable in specs to what we are using now.

If they are not on the UL Class P program but are UL Recognized, then we have to have them tested in our fixture.

If they are not UL Recognized then we have to have the driver tested and certified and then also the fixture with them in it.

Otherwise we cannot mark our fixtures as UL Compliant if they include the drivers. There is a small residential-based retail market where it is less critical to have UL certification to our fixtures but it is not the greater share of the marketplace (for us).