Filter only. The complete kit is available here., To the best of our knowledge, we are using the highest rated filter material used for a bell cover
Air Purifiers, Fans, and Filters: A COVID-19 Explainer for Schools
The Bat - Berp & Co
The Bat - Berp & Co
Reusable Elastomeric Respirators, 3M Medical
Can a Portable Air Cleaner Protect You from COVID-19? : Goats and Soda : NPR
Our respirator masks are NOT approved for protection against any bio-hazard including the corona virus Covid 19., Organic Vapor/Acid Gas Replacement
Respirator Filters, pair
Violin Comfort Bag - Berp & Co
The Bat - Berp & Co
COVID-19, Research groups