Replacement or upgrade for standard Big Blue systems
Activated Alumina filter
Bone Char Carbon filter
Standard 4.5-inch x 20-inch filters
Replacement Big Blue filters. Activated alumina is...
Replacement or upgrade for standard Big Blue systems
Dual Bone Char Carbon filters
Standard 4.5-inch x 20-inch filters
Replacement Big Blue filters. Bone char carbon is typically used to...