Exec Carbon 1"AllerAir Exec Carbon Replacement Filter 1" Depth The Exec Carbon Replacement Filter is designed for general purpose air purification in AllerAir air purifiers, offering reliable protection against a wide range of airborne contaminants. Built with a 1 inch deep activated carbon bed weighing approximately 5. 5 lbs Provides an impressive 687. 5 acres of carbon media surface area for maximum adsorption capacity Purpose: General air filtration for homes,