Smokemaster Activated Charcoal Filters

These charcoal filters have 30 grams of charcoal per square foot of charcoal filter media. A layer of expanded aluminum face grid on each side and are enclosed in a one piece aluminum frame with an aluminum rivet in the closing corner. Charcoal after filters like these collect odors, gases and chemicals and change ozone back into oxygen. Every electronic air cleaner should have a charcoal after filter.