Keep the complete LV-PUR131 or LV-PUR131S device code. This is not a Core or Vital filter.
These manufacturer-listed models were checked for the US. An international search or redirect does not approve another regional model or filter variant.
Find the complete model code
Read the full Levoit model on the rear or underside label.
Match one of the listed models: LV-PUR131, LV-PUR131S.
Check LV-PUR131-RF and the complete LV-PUR131-series replacement set name on the merchant page.
Filter and fitting details
Levoit explicitly lists both LV-PUR131 and LV-PUR131S. This is one replacement set; the two-pack has a separate Amazon listing.
The retained buying option is 1 replacement set. Check the final product reference, seller and quantity before ordering.