Pro 6 Exec CarbonAllerAir Exec Carbon Replacement Filter 2. 5" 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 2. 5 inch deep activated carbon bed weighing approximately 17 lbs Provides an impressive 2,125 acres of carbon media surface area for maximum adsorption capacity Purpose: General air filtration for