Mitsubishi Air purifier filter for MSZ-LN Hero models.
The Air purifier filter is original from Mitsubishi Electric and is of the type " Silverionized air purifier filter".
You should change the filter once a year to maintain best indoor climate.
Mitsubishi also calls this filter MAC-2390FT-E in the instructions for the air conditioner.
The package consists of 1 filter as shown in the picture.