Signia 7ax - correct wax filters?

I recently reached out to Signia customer service for guidance on the correct product number for replacement 7ax wax filters. Specifically, I asked what wax filters fit the 3.0 receiver. Is the recommended part number 10993607 as marked on the plastic holders? Are their others that work? Signia provided no guidance at all and suggested I contact a provider. That lack of response to a simple direct question was just not acceptable.

Any guidance on wax filter options for the 7ax 3.0 receiver would be very much appreciated.

Al