Canister S-Class HEPA Filter #030720100
This optional Certified S-Class HEPA Exhaust Filter can be used instead of the standard Filtrete exhaust filter in the model HF-6 for even cleaner air. This filter is highly recommended for those who have dust related allergies or asthma. It should be replaced every 12 months with typical household use.
Archived Retired Product - Not Available for Sale
https://www.ristenbatt.com/xcart/Lindhaus-Filters.html